Single Parameter Test Kits

HI38086 Calcium Test Kit by Hanna Instruments

Hardness in water is mainly due to the presence of Calcium and Magnesium ions and each contributes to the amount of total hardness. Monitoring and controlling hardness is instrumental in order to prevent scaling and corrosion.

The HI 38086 test kit determines calcium in water via a turbidimetric method. HANNA reagents react selectively with calcium to form a white suspension. The developed turbidity is proportional to calcium concentration.

Order Information:

HI 38086 test kit comes with 30 mL buffer reagent, oxalate reagent (100 packets), 500 mL deionized water, 50 mL glass test tube, 50 mL calibrated vessel, 1 mL plastic pipette, plastic spoon, graduated card and line card.

HI3810 Dissolved Oxygen Test Kit by Hanna Instruments

The HANNA dissolved oxygen portable test kit can determine the oxygen concentration in water quickly and easily. A modified Winkler method is used. Manganous ions react with oxygen in the presence of potassium hydroxide to form a manganese oxide precipitate. An azide is present to prevent any nitrite ions from interfering with the test. On addition of acid, manganese oxide hydroxide oxidizes the iodide to iodine. Since the amount of iodine generated is equivalent to the oxygen in the sample, the concentration of iodine is calculated by titration of thiosulfate ions that reduce the iodine back to iodide ions.

Order Information:

HI 3810 test kit comes with 30 mL manganous sulfate solution, 30 mL alkali-azide reagent, 60 mL sulfuric acid solution (2), 10 mL starch indicator, 120 mL titrant solution, glass bottle with stopper, 10 mL calibrated vessel and calibrated syringe with tip.

HI3811 Alkalinity Test Kit Kit by Hanna Instruments

The HANNA alkalinity test kit makes monitoring easy, quick and safe. The compact size gives the user the versatility to use the kit anywhere. The design makes the kit easy to handle and, except for alkalinity titrant, practically prevents accidental injury or damage due to spills.

Alkalinity can be measured as phenolpthalein alkalinity and total alkalinity. The phenolpthalein alkalinity is determined by neutralizing the sample to a pH of 8.3 using a dilute hydrochloric acid solution, and a phenolpthalein indicator. Since bicarbonate ions can be converted to carbonic acid with additional hydrochloric acid, the phenolpthalein alkalinity measures total hydroxide ions, but only half of the bicarbonate contribution.

Order Information:

HI 3811 test kit comes with 10 mL phenolpthalein indicator, 10 mL bromophenol blue indicator, 120 mL alkalinity titrant, 10 mL calibrated vessel, 50 mL calibrated vessel, and calibrated syringe with tip.

HI3812 Hardness Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

The HI 3812 test kit tests the hardness level as mg/L (ppm) calcium carbonate, via an EDTA (ethylene-diamine-tetraacetic acid) titration.

Order Information:

HI 3812 test kit comes with 30 mL hardness buffer, 10 mL calmagite indicator, 120 mL EDTA solution, 20 mL plastic beaker with cap, 50 mL plastic beaker with cap and 1 mL syringe with tip.

HI3815 Chloride Test Kit by Hanna Instruments

The HANNA chloride test kit is quick, easy to use and portable. The design makes the kit easy to handle and, except for mercuric nitrate solution, practically prevents accidental injury or damage due to spills. The pH is lowered to approximately 3 by addition of nitric acid. Mercuric ions react with chloride ions to form mercuric chloride; when excess mercuric ions is present, it complexes with diphenylcarbazone to form a purple solution. The color change from yellow to purple determines the end point of this titration.

Order Information:

HI 3815 test kit comes with 15 mL diphenyl-carbazone indicator, 30 mL nitric acid solution, 120 mL mercuric nitrate solution, 50 mL calibrated vessel, 10 mL calibrated vessel, calibrated syringe with tip.

HI3818 Carbon Dioxide Test Kit by Hanna Instruments

Carbon dioxide levels can be measured quickly and safely with the HANNA Carbon Dioxide Test Kit. This compact, portable kit allows the user the option of field or laboratory use. The design makes the kit easy to handle and, except for the Carbon Dioxide Reagent, practically prevents accidental injury or damage due to spills.

Carbon dioxide (as carbonic acid) in the water sample is neutralized with a dilute sodium-hydroxide solution to a pH of 8.3 using a phenolphthalein indicator. This process converts carbonic acid to sodium bicarbonate:

CO2+H2O ? H2CO3+NaOH ? NaHCO3+H20

Order Information:

HI 3818 test kit comes with 10 mL phenolphthalein indicator, 120 mL carbon dioxide reagent, 10 mL calibrated vessel, 50 mL calibrated vessel and calibrated syringe.

HI3820 Acidity Test Kit by Hanna Instruments

With the use of diluted sodium hydroxide as the titrant and bromphenol blue or phenolphthalein indicators, the contribution of strong or organic acids can be determined. The measurement of the strong acid contribution to the sample acidity is known as methyl orange acidity. This is carried out by titrating with sodium hydroxide until the solution turns from yellow to green/blue (pH endpoint about 4.5). The total acidity caused by both mineral and organic acids is determined by titrating to an endpoint pH of 8.3, using phenolphthalein as an indicator. This is known as phenolphthalein inacidity.

Order Information:

HI 3820 test kit comes with 10 mL dechlorinating reagent, bromophenol blue indicator, phenolpthalein indicator, acidity titrant, 10 mL calibrated vessel, 50 mL calibrated vessel, and calibrated syringe.

HI3822 Sulfite Test Kit by Hanna Instruments

The HANNA sulfite test kit makes monitoring easy, quick and safe. The compact size gives the user the versatility to use the kit practically anywhere. The design of the kit makes it practically impossible to spill the reagents, thereby reducing the possibility of injury or damage to property.

The method used is an iodometric method. Iodide ions react with iodate ions in the presence of sulfuric acid to form iodine.

The sulfite present in the water sample then reduces the iodine back to iodide.

An excess of iodate ions will generate additional iodine, which will form a blue complex with starch. This color change determines the end point of this titration.

Order Information:

HI 3822 test kit comes with 30 mL sulfamic acid solution, 30 mL EDTA reagent, 15 mL sulfuric acid solution, 10 mL starch indicator, 120 mL titrant solution, 20 mL calibrated vessel, 50 mL calibrated vessel and calibrated syringe with tip.

HI3824 Ammonia Test Kit for Fresh Water by Hanna Instruments

Concentrations of ammonia in rivers and drinking water reservoirs indicate the presence of agriculture or urban pollution. When the concentration of ammonia is high enough, it can alter the smell and taste of water. In industrial applications, high concentrations of ammonia can cause corrosion in pipes. Ammonia is also monitored in aquariums and fish farming applications because of its toxicity to fish.

This HANNA ammonia portable test kit determines the ammonia concentration in water in several easy steps. The Nessler reagent reacts with ammonia, under strong alkaline conditions, to form a yellow colored complex.

Order Information:

HI 3824 test kit comes with 20 mL plastic beaker, color comparison cube, 20 mL ammonia reagent 1 (for fresh water) and 20 mL Nessler reagent.

HI3826 Ammonia Test Kit for Sea Water by Hanna Instruments

Concentrations of ammonia in rivers and drinking water reservoirs indicate the presence of agriculture or urban pollution. When the concentration of ammonia is high, it can alter the smell and taste of water. In industrial applications, high concentrations of ammonia can cause corrosion in pipes. Ammonia is also monitored in aquariums and fish farming applications because of its toxicity to fish.

The HANNA ammonia portable test kit determines the ammonia concentration in water in several easy steps. The ammonia level in mg/L (or ppm), ammonia as nitrogen is determined by a colorimetric method. The Nessler reagent reacts with ammonia, under strong alkaline conditions, to form a yellow colored complex (see equation below). An addition of Reagent 1 for Sea Water inhibits precipitation of calcium and magnesium ions due to the presence of the alkaline Nessler reagent. The color intensity of the solution determines the ammonia concentration:

2K2Hgl4 +2NH3 ? NH2Hg2I3 + NH4I + 4KI

Order Information:

HI 3826 test kit comes with 20 mL plastic beaker, color comparison cube, 20 mL ammonia reagent 1 (for sea water) and 20 mL Nessler reagent.

HI3830 Bromine Test Kit by Hanna Instruments

Bromine, because it is stable and less volatile than chlorine, is utilized as a disinfectant in swimming pools, spas and hot tubs. As with chlorine, excessive quantities of bromine in water can be dangerous to health and can cause eye irritation.

Daily monitoring of bromine concentration prevents damage to equipment and contributes to the optimization and efficiency of the process while providing for increased user safety.

The HANNA portable bromine test kit determines the bromine level in water with efficiency. The first step involves pH adjustment of the sample to pH 6.3 by adding pH buffer. The second step consists of adding the second reagent, an indicator solution which contains DPD (N, N-diethyl-p-phenylenediamine). DPD is immediately oxidized by bromine producing a reddish color. The color intensity of the solution determines the bromine concentration.

Order Information:

HI 3830 test kit comes with 30 mL reagent 1, 20 mL reagent 2, color comparison cube, and plastic vessel.

HI3831F Free Chlorine Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 3831F and HI 3831F/S test kit comes with color comparison cube, 20 mL reagent 1 and 15 mL reagent 2.

HI3831T Total Chlorine Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 3831T and HI 3831T/S test kits comes with color comparison cube, 20 mL chlorine reagent 1, 15 mL chlorine reagent 2 and 15 mL chlorine reagent 3.

HI3832 Iodine Test Kit by Hanna Instruments

The HI 3832 iodine test kit employs a color cube to determine the iodine content in water. The kit is compact and is practical for field use. No chlorine or bromine can be present in the water sample for this test to work properly. The iodine is measured by a colorimetric method. The sample is initially treated with a phosphate buffer to a pH of approximately 6.3. The addition of DPD (N, N-diethyl-p-phenylenediamine) is immediately oxidized by iodine producing a reddish color. The color intensity of the solution determines the iodine concentration.

Order Information:

HI 3832 test kit comes with color comparison cube, 30 mL reagent 1 and 20 mL reagent 2.

HI3833 Phosphate Test kit by Hanna Instruments

The orthosphosphate level in mg/L (or ppm) is determined by a colorimetric method. Ammonium molybdate and potassium antimonyl tartrate react in acid medium with orthophosphate to form a phosphomolybdate complex, that is reduced to intensely colored molybdenum blue by ascorbic acid. The color intensity of the solution determines the phosphate concentration. Phosphates can be classified as ortho, condensed or organically bound. As with existing test kits on the market, the HANNA Phosphate Test Kit will only determine ortho phosphate levels.

Order Information:

HI 3833 test kit comes with 20 mL plastic beaker, color comparison cube and 50 packets phosphate reagent.

HI3834 Iron Test Kit by Hanna Instruments

The HANNA test kit determines the iron concentration in water by conversion of the ferrous (Fe2+) state. The test is fast, easy and safe. The color cube makes it simple to obtain the iron level in water.

Iron can exist as ferrous (Fe2+) or ferric (Fe3+) ions. The HANNA test kit determines total iron levels in water via a colorimetric method. First all ferric ions are reduced by sodium sulfite to ferrous ions. Phenanthroline complexes with ferrous ion to form an orange colored solution. The color intensity of the solution determines the iron concentration.

Order Information:

HI 3834 test kit comes with 50 packets iron reagent, color comparison cube and 20 mL plastic vessel.

HI3835 Salinity Test Kit by Hanna Instruments

The HANNA test kit measures salinity using a fast and efficient titrimetric method. The test requires only a few simple and safe steps to obtain results. The salinity level in g/kg is determined by a mercuric nitrate titration method. The pH is lowered to approximately 3 by addition of nitric acid. Mercuric ions react with chloride ions to form mercuric chloride. When excessive mercuric ions are present, it complexes with diphenylcarbazone to form a purple solution. The color change from yellow to violet indicates the endpoint.

Order Information:

HI 3835 test kit comes with 15 mL diphenyl-carbazone indicator, 30 mL nitric acid solution, 120 mL titrant solution, plastic vial and 1 mL calibrated syringe with tip.

HI3838 Formaldehyde Test Kit by Hanna Instruments

The HANNA formaldehyde portable test kit makes monitoring easy, quick and safe. The design of the kit makes it practically impossible to spill the reagents, thereby reducing the possibility of injury or damage to property.

Formaldehyde concentration is determined by a simple acid titration. The formaldehyde, in the aqueous sample, reacts with sodium sulfite to form an alkaline product. This product is then titrated to a yellow alizarin R yellow endpoint, using a prestandardized hydrochloric acid solution.

Order Information:

HI 3838 test kit comes with 15 mL Alizarin Yellow R indicator, 30 g sodium sulfite, 120 mL titrant solution, plastic spoon, plastic bottle, 10 mL calibrated vessel, filter cartridge, calibrated titration syringe and plungers.

HI3840 Hardness Low Range Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

The HI 3840 test kit determines total hardness in water via a titrimetric method.

Order Information:

HI 3840 test kit comes with 30 mL hardness LR reagent and 50 mL calibrated vessel.

HI3841 Hardness Medium Range Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

Order Information:

HI 3841 test kit comes with 30 mL hardness MR reagent and 50 mL calibrated vessel.

HI3842 Hardness High Range Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

Order Information:

HI 3842 test kit comes with 30 mL hardness HR reagent and 50 mL calibrated vessel.

HI3843 Hypochlorite Test Kit by Hanna Instruments

The available chlorine refers to the chlorine liberated by the action of dilute acid on the hypochlorite:
(OCl)— + Cl— + 2H+ ? Cl2 + H2O

An iodometric titration method is used in this test kit. The hypochlorite solution is treated with potassium iodide and strongly acidified with acid:
(OCl)— + 2H+ + 2I— ? Cl— + I2 + H2O

The amount of iodine generated is equivalent to the chlorine in the sample. The concentration of iodine is then calculated by titration of thiosulfate ions that reduce the iodine back to iodide ions:
I2 + 2(S2O3)2– ? 2I— + (S4O6)2-

Order Information:

HI 3843 test kit comes with 30 mL potassium iodide solution, 100 packets bleach reagent B, 60 mL bleach reagent C (2), 125 mL glass Erlenmeyer flask and 1 mL plastic pipettes (25).

HI3844 Hydrogen Peroxide Test Kit by Hanna Instruments

The HI 3844 test kit can quickly and easy determine concentration in water up to 10 ppm of hydrogen peroxide. This is due to the fact that it is not affected by stabilizers, which are sometimes added to commercial hydrogen peroxide solutions. The kit is portable and can be used in the field as well as in the laboratory.

Hydrogen peroxide is determined by a titrimetric method. It reacts slowly with iodide in acid solution (Step 1); thus a 15 minute interval is required to allow the reaction to occur completely. The amount of iodine generated is equivalent to the hydrogen peroxide in the sample. The liberated iodine is then titrated with standard sodium thiosulfate solution that reduces the iodine back to iodide ions (Step 2).

Step 1: H2O2 + 2H+ + 2I— ? I2 + 2H2O
Step 2: I2 + 2(S2O3)2– ? 2I— + (S4O6)2–

Order Information:

HI 3844 test kit comes with 100 mL hydrogen peroxide reagent A, 17 g hydrogen peroxide reagent B, 30 mL hydrogen peroxide reagent C, 25 mL hydrogen peroxide reagent D, graduated plastic test tube with cap, 50 mL calibrated plastic vessel, 3 mL plastic pipette, 1 mL plastic pipette and plastic spoon.

HI3845 Chromium Medium Range and High Range Test Kit by Hanna Instruments

Chromium salts are widely used in industrial processes, in galvanic plants, in tanneries and chemical manufacturing plants. Chromium can therefore be found in industrial discharges and must be monitored because of its toxic nature.

The HANNA chromium test kit is field portable and can also be used in the laboratory. HI?3845 is able to determine traces of chromium up to 1000 ppm.

Chromate is determined by a titrimetric method. Only the hexavalent chromium will react with iodide in acid solution. (Step 1:) The amount of iodine generated is equivalent to the chromium in the sample. (Step 2:) The liberated iodine is then titrated with standard sodium thiosulfate solution that reduces the iodine back to iodide ions.

Step 1:
2(CrO4)2- + 16H+ + 6I— ? 3I2 + 8H2O + 2Cr3+

Step 2:
I2 + 2(S2O3)2– ? 2I— + (S4O6)2-

Order Information:

HI 3845 test kit comes with chromium MR-HR reagent A (100 packets), 17 g chromium MR-HR reagent B, 60 mL chromium MR-HR reagent C, 25 mL starch indicator, 20 mL calibrated vessel, 1 mL plastic pipette, graduated plastic test tube with cap.

HI3846 Chromium Test Kit by Hanna Instruments

Chromium salts are widely used in industrial processes, in galvanic plants, in tanneries and chemical manufacturing plants. Chromium can therefore be found in industrial discharges and must be monitored because of its toxic nature.

Chromium VI reacts with diphenyl-carbohydrazide to form a purple product in an acidic buffered condition. The amount of color developed is proportional to the concentration of chromium present in the aqueous sample.

Order Information:

HI 3846 test kit comes with HI 3846-0 reagent (100 packets) and color comparison cube.

HI3847 Copper Test Kit by Hanna Instruments

Copper is an essential trace element in human diet (the daily requirement is around 2.0 mg) and a factor in plant metabolism.

On the other hand, corrosion of copper alloys in pipe fittings may introduce considerable quantities of copper into water supplies.

Copper salts react with bicinchoninate reagent to form a purple product in a neutral buffered condition. The amount of color developed is directly proportional to the concentration of copper present in the aqueous sample.

Order Information:

HI 3847 test kit comes with HI 3847-0 reagent (100 packets) and color comparison cube.

HI3849 Hydrazine Test Kit by Hanna Instruments

Hydrazine reacts with the reagent in acidic solution to form a yellow complex. The absorbance of this colored product is proportional to the concentration of hydrazine present in the aqueous sample.

Order Information:

HI 3849 test kit comes with 50 mL hydrazine reagent (2), 500 mL deionized water, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI3850 Ascorbic Acid Test Kit by Hanna Instruments

Ascorbic acid (C6H8O6) undergoes an oxidation reaction with potassium iodate in acidic condition.

The endpoint is indicated by the reaction of iodine with starch suspension, which produces a blue-black product. As long as ascorbic acid is present, the triiodide is quickly converted to iodide ion, and no blue-black iodine-starch product is observed. However, when all the ascorbic acid has been oxidized, the excess triiodide (in equilibrium with iodine) reacts with starch to form the expected blue-black color.

Order Information:

HI 3850 test kit comes with 100 mL ascorbic acid reagent A, 25 mL starch indicator, 100 mL ascorbic acid reagent C, 50 mL calibrated plastic vessels (2), 3 mL plastic pipette, 1 mL plastic pipette (2) and graduated plastic test tube with cap.

HI3851 Cyanuric Acid Test Kit by Hanna Instruments

Cyanuric acid (CYS) is widely applied in swimming pools to slow down the decomposition of chlorine. In outside pool areas, this process is accelerated by the effect of ultraviolet rays. With a correct dose, it can save up to 80% of normal chlorine consumption in pools during peak sunny months.

Cyanuric acid is also used in chlorinated bleaches and selective herbicides.

The reaction between cyanuric acid and the reagent causes a white suspension in the sample. The turbidity is proportional to the concentration of cyanuric acid.

Order Information:

HI 3851 test kit comes with 100 packets HI 93722-0 reagent, 25 mL glass test tube, 50 mL plastic vessel, 3 mL plastic pipette and spoon.

HI3854 Zinc Test Kit by Hanna Instruments

Zinc reacts with the zincon reagent to form a brownish-green to blue complex in a solution buffered at alkaline pH.

Since other metals can form colored complexes with zincon, cyanide is added to complex zinc and any other heavy metal present. Then, cyclohexanone is added to selectively free zinc from its cyanide complex so that it can react with zincon to form the final blue colored product. The amount of color developed is proportional to the concentration of zinc present in the aqueous sample.

Order Information:

HI 3854 test kit comes with 100 packets zinc reagent A, 60 mL zinc reagent B (2), color comparison cube, 10 mL glass cuvette with HDPE stopper, 1 mL syringe, 20 mL calibrated vessel and plastic spoon.

HI3855 Cyanide Test Kit by Hanna Instruments

Cyanide refers to all of the CN groups in cyanide-compounds that can be determined as the cyanide ion CN—. In most natural waters the molecular HCN form predominates. In solutions of metal cyanides, the CN group may also be present as a complex of varying stability. Cyanides are extensively used for extraction of silver/gold ores, metal-cleaning and electroplating baths, coke ovens and other chemical processes. There are mainly two chemical treatments to remove cyanides from waste-waters: one is chlorination and the other is the alkaline method.

Cyanides react with the pyridine-pyrazolone reagent to form a blue complex in neutral buffered solution. The absorbance of this colored product is proportional to the concentration of cyanide present in the aqueous sample.

Order Information:

HI 3855 test kit comes with 17 g cyanide reagent A, 100 packets cyanide reagent B, 100 packets cyanide reagent C, checker disc, glass vials with caps, 3 mL plastic pipette and spoon.

HI3856 Copper Test Kit by Hanna Instruments

Copper is a reddish metal that occurs naturally in rock, soil, water, sediment, and air. Its unique chemical and physical properties have made it one of the most commercially important metals. Since copper is easily shaped or molded, it is commonly used to make money, electrical wiring, and water pipes. Copper compounds are also used as an agricultural pesticide and to control algae in lakes and reservoirs.

Test Kit is for ultra low range copper, with color comparison cube.

Order Information:

HI 3856 test kit comes with HI 3856-0 reagent (100 packets) and color comparison cube.

HI3857 Detergents Test Kit by Hanna Instruments

Detergents can enter water and wastewater by discharge of domestic and industrial cleansing waters. The most widely used detergents are linear alkyl sulfonates (LAS) and alkyl benzene sulfonates (ABS): LAS are preferable to ABS because they are biodegradable, thus readily decomposed by microorganisms. The presence of anionic LAS/ABS detergents in natural waters should be below 0.1 mg/L and in raw domestic wastewater in the range from 1 to 20 mg/L.

The aqueous solution containing the detergents is treated with the colored indicator. The reaction product can be extracted in the chloroform layer, while the original dyestuff is insoluble in the organic medium. The intensity of the color developed is proportional to the concentration of the detergents present.

Order Information:

HI 3857 test kit comes with 15 mL detergents reagent A, 15 mL detergent reagent B, 180 mL chloroform, demineralizer bottle with filter cap for 12 L, checker disc, 30 mL long glass vials with caps (2), long plastic pipette, 3 mL plastic pipette and 1 mL plastic pipette.

HI3859 Glycol Yes/No Test Kit by Hanna Instruments

Use the HI 3859 glycol standard 0.025% included in the kit to easily recognize a positive result in the form of an intense purple color. Ethylene glycol and other glycols are determined by a two step reaction:

Step 1: glycol is oxidized to two carbonyl groups under acidic conditions;
Step 2: the carbonyl groups react with the indicator to give a colored solution.

Order Information:

HI 3859 test kit comes with 125 mL glycol reagent A, 25 packets glycol reagent B, 25 packets glycol reagent C, 25 mL glycol standard 0.025%, 3 mL plastic pipette, 1 mL plastic pipettes (25), 10 mL glass vials with caps (2) and brush.

HI3864 Phenols Test Kit by Hanna Instruments

The HANNA test kit for phenols determines the phenol concentration in water via checker disc. Phenolic compounds react to form a yellow to orange dye with 4-amino antipyrine in alkaline solution buffered at pH about 10. The absorbance of this colored product is proportional to the concentration of phenols present in the aqueous sample.

Order Information:

HI 3864 test kit comes with 100 packets reagent A, 100 packets reagent B, checker discs (2), glass vials with caps (2) and mirror

HI3873 Nitrite Test Kit by Hanna Instruments

The HI 3873 HANNA test kit determines the nitrite concentration in water via color comparison cube.

Nitrites react with chromotropic acid reagent to form a pink tint in the sample. The amount of color developed is proportional to the concentration of nitrite present in the aqueous sample.

Order Information:

HI 3873 test kit comes with 100 packets nitrite reagent, glass cuvette and color comparison cube.

HI3874 Nitrate Test Kit by Hanna Instruments

Nitrate ions are present in trace amounts in surface water and in higher levels in some groundwater. Nitrate is found only in small quantities in domestic wastewater but can reach higher concentration (up to 30 mg/L as nitrogen) in the outflow of nitrifying biological treatment plants. Excessive amounts can contribute to methaemo-globinemia: infant death and adult illness. In order to prevent this, a 10 mg/L limit (as nitrogen) has been imposed on drinking water.

Order Information:

HI 3874 test kit comes with 100 packets nitrate reagent, glass cuvette and color comparison cube.

HI3875 Free Chlorine Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 3875 test kit comes with HI 93701-0 free Cl reagent (100 packets), 500 mL deionized water, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI3887 Free Chlorine and pH Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 3887 test kit comes with color comparison cubes (2), 20 mL reagent 1, 15 mL reagent 2, 25 mL HI 3881-0 pH 6.0-8.5 reagent.

HI3888 Total Chlorine and pH Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 3888 test kit comes with color comparison cube, 20 mL Cl reagent 1, 15 mL Cl reagent 2, 15 mL Cl reagent 3 and 25 mL HI 3881-0 pH 6.0-8.5 reagent.

HI3889 Iron and Total Hardness Test Kit by Hanna Instruments

Iron is naturally present in water in low concentrations, but it reaches high concentrations in wastewater effluents. The iron concentration in water needs to be monitored because it becomes harmful above certain levels.

In domestic water, for instance, iron can unpleasantly alter the taste, stain laundry, damage kitchenware and favor the growth of certain bacteria. Iron is also an indicator of ongoing corrosion in industrial plants or in water cooling and heating systems. Moreover, iron is normally monitored in mining wastewater to avoid contamination.

Generally, ground and surface water contains no more than 1 mg/L (ppm) iron; but due to mining and industrial drainage, higher levels of iron have been observed. Iron in water appears to be more of a nuisance than a hazard.

Order Information:

HI 3889 test kit comes with 50 packets iron reagent, color comparison cube, 20 mL plastic vessel, 30 mL hardness MR reagent and 50 mL calibrated plastic vessel.

HI3897 Olive Oil Acidity Test Kit by Hanna Instruments

Acidity, defined as percent oleic acid, is a parameter that indicates olive oil freshness. A high acidity value indicates the oil quality has diminished and is at risk of becoming rancid.

Acidity is used to discriminate an extra virgin olive oil from all other olive oils. According to the CEE 2568/91 regulation, olive oil is considered extra virgin when its acidity level is below 1%. A low acidity value also indicates a natural extraction process occurred soon after olive harvesting.

With the HI 3897 test kit, it is possible to easily and accurately test the quality of olive oil at various stages of processing and storage to monitor and maintain the highest quality. The HI 3897 kit utilizes a titration method where the endpoint is visually determined when the color changes from yellow-green to pink.

Order Information:

HI 3897 is supplied with 6 ready-to-use bottles of organic solvent, HI 180MB magnetic stirrer, calibrated syringe for oil dosing, calibrated syringe for titrant dosing, titrant (30 mL bottle), rugged carrying case and instructions.

HI3898 Chloride Rapid Screening Test for COD - ISO and EPA by Hanna Instruments

This screening test is a quick test to detect high chloride levels in water and wastewater that might cause interference with official COD methods. The test is in accordance with the ISO 15705:2002 method, and indicates within seconds a YES/NO possibility of having chloride interference on COD measurements. The kit can be used for checking 1000 ppm chloride concentration for the ISO COD testing, or for a 2000 ppm chloride check for the USEPA, APHA, AWWA and WEF methods.

Upon adding the indictor to the sample, the solution turns yellow. Then the chloride titrant is added and a white precipitate is formed if chlorides are present. If the chloride concentration is lower than 1000 ppm for ISO, or 2000 ppm for EPA, a orange-brown complex is formed. If the solution remains yellow, high chloride concentrations are present.

Order Information:

HI 3898 test kit comes with 25 mL chloride titrant bottles (4), 7 mL chloride indicator, glass cuvette with plastic stopper and1.0 mL calibrated syringes with tips (2).

HI38000 Sulfate Test Kit by Hanna Instruments

The procedure for determining sulfate is a modification of the barium sulfate turbidimetric method.

Sulfate is precipitated as barium sulfate by reaction with barium chloride in acidic medium. The turbidity is proportional to the concentration of sulfate:

(SO4)2- + Ba2+ ? BaSO4

Order Information:

HI 38000 test kit comes with 100 packets sulfate reagent A, 53 g sulfate reagent B, 10 mL complexing agent, 50 mL glass test tube, 50 mL plastic vessel, 3 mL plastic pipette and spoon.

HI38001 Sulfate Low and High Range Test Kit by Hanna Instruments

The procedure for determining sulfate is a modification of the Determination of Sulfate by Sulfonazo III. Sulfate is determined via a titrimetric method. The reaction end point is indicated by the change in color of the solution from violet to blue.

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HI 38001 test kit comes with 100 packets sulfate reagent A (2 sets), 100 mL LR sulfate reagent B, 100 mL HR sulfate reagent B, 10 mL sulfate reagent C, 20 mL complexing agent, 30 mL sulfate solution, 50 mL plastic vessels (2) and 1 mL syringes (2).

HI38013 Phenolphthalein and Total Alkalinity Test Kit by Hanna Instruments

In this case the phenolphthalein alkalinity is determined by neutralizing the sample to a pH of 8.3 using a dilute sulfuric acid solution and a phenolphthalein indicator. Since bicarbonate ions can be converted to carbonic acid with additional sulfuric acid, the phenolphthalein alkalinity measures total hydroxide ions, but only half of the carbonate contribution.

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HI 38013 test kit comes with 10 mL phenolphthalein indicator, 10 mL bromophenol blue indicator, 105 mL alkalinity reagent (2), 20 mL calibrated plastic vessel with cap and 1 mL syringe with tip.

HI38014 Total Alkalinity Test Kit by Hanna Instruments

This parameter is important in determining the corrosive properties of minerals found in water, such as, silicates, carbonates, bicarbonates, and dissolved salts of phosphates and some organic acids. Testing alkalinity is important in the treatment of drinking water, wastewater, pools, heating and cooling, food and beverage cleaning systems, soil and environmental testing, as well as in agriculture, and aquaculture applications.

Total alkalinity is determined by neutralizing the sample to a pH of 4.5 using a dilute sulfuric acid solution and a bromophenol blue indicator.

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HI 38014 test kit comes with 10 mL bromophenol blue indicator, 110 mL total alkalinity reagent, 20 mL calibrated vessel with cap and 1 mL syringe with cap.

HI38015 Chloride Extended Range Test Kit by Hanna Instruments

The HANNA extended range chloride test kit is equipped with all you need to determine high chloride levels of water. The chloride level in mg/L (ppm) is determined by a silver nitrate titration, using potassium chromate as indicator. The color change from yellow to brick-red determines the end point of this titration.

Order Information:

HI 38015 test kit comes with 100 mL chloride reagent A, 25 mL chloride reagent B (2), 100 mL chloride reagent C, demineralizer bottle with filter cap for 12 L, 50 mL calibrated plastic vessel with cap, 3 mL plastic pipette, 1 mL plastic pipette, 1 mL syringes with tips (2) and brush.

HI38016 Total Chlorine Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 38016 test kit comes with HI 90711-0 total Cl reagent (100 packets), 500 mL deionized water, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38017 Free & Total Chlorine Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 39017 test kits come with HI 93701-0 free chlorine reagent (100 packets), HI 93711-0 total chlorine reagent (100 packets), demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipettes.

HI38018 Free Chlorine Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 38018 test kit comes with HI 93701-0 free chlorine reagent (200 packets), demineralizer bottle with cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipettes.

HI38019 Total Chlorine Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 38019 test kit comes with HI 93711-0 total Cl reagent (100 packets), demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38020 Free & Total Chlorine Test Kit by Hanna Instruments

Free chlorine reacts with ammonium ions and organic compounds to form chlorine compounds resulting in diminished disinfecting capabilities compared with free chlorine. These chlorine compounds together with chloramines form combined chlorine. Combined chlorine and excess free chlorine together result in total chlorine. While free chlorine has a much higher disinfectant potential, combined chlorine has a much higher stability and has a lesser volatility. There should be sufficient levels of unreacted free chlorine for adequate disinfection, but not so much as to become harmful.

Order Information:

HI 38020 test kits come with HI 93701-0 free chlorine reagent (100 packets), HI 93711-0 total chlorine reagent (100 packets), demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2) and 3 mL plastic pipettes.

HI38022 Total Chlorine Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 38022 test kit comes with 30 mL potassium iodide solution, sulfamic reagent (100 packets), 25 mL starch indicator, 100 mL thiosulfate reagent, 50 mL calibrated vessel, 20 mL calibrated vessel, 3 mL plastic pipette, 1 mL plastic pipette and spoon.

HI38023 Total Chlorine Test Kit by Hanna Instruments

The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulfide and some organic substances.

Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfill the primary purpose of disinfecting and to minimize any adverse effects.

Order Information:

HI 38023 test kit comes with 30 mL potassium iodide solution, sulfamic reagent (100 packets), 25 mL starch indicator, 100 mL thiosulfate reagent, 50 mL calibrated vessel, 1 mL syringe with tip, 1 mL plastic pipette and spoon.

HI38033 Total Hardness Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

Order Information:

HI 38033 test kit comes with 30 mL buffer solution, 10 mL calmagite indicator, 75 mL EDTA solution (2), 20 mL plastic beaker with cap and 1 mL plastic pipette.

HI38034 Total Hardness Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

Order Information:

HI 38034 test kit comes with 30 mL buffer solution (2), 10 mL calmagite indicator, 100 mL EDTA solution (0-20 gpg), 100 mL EDTA solution (0-20 ppm), 50 mL calibrated vessel with cap and 1 mL syringes (2).

HI38035 Total Hardness and Calcium Test Kit by Hanna Instruments

Water hardness has traditionally been defined as the capacity of water to precipitate soap. The ionic species in the water causing the precipitation was later found to be primarily calcium and magnesium. In the present, therefore, water hardness is actually a quantitative measure of these ions in the water sample. It is also now known that certain other ion species, such as iron, zinc and manganese, contribute to the overall water hardness. The measure and subsequent control of water hardness is essential to prevent scaling and clogging in water pipes.

Order Information:

HI 38035 test kit comes with 30 mL buffer solution, 10 mL calmagite indicator, 100 mL EDTA solution (0-20 gpg), 10 mL calcium reagent A, 10 mL calcium reagent B, 15 mL calcium solution B, 100 mL calcium solution D, 50 mL calibrated plastic vessel with cap and 1 mL syringe with two tips.

HI38039 Iron Low Range Test Kit by Hanna Instruments

Iron is naturally present in water in low concentrations, but it reaches high concentrations in wastewater effluents. The iron concentration in water needs to be monitored because it becomes harmful above certain levels.

In domestic water, for instance, iron can unpleasantly alter the taste, stain laundry, damage kitchenware and favor the growth of certain bacteria. Iron is also an indicator of ongoing corrosion in industrial plants or in water cooling and heating systems. Moreover, iron is normally monitored in mining wastewater to avoid contamination.

Generally, ground and surface water contains no more than 1 mg/L (ppm) iron; but due to mining and industrial drainage, higher levels of iron have been observed. Iron in water appears to be more of a nuisance than a hazard.

Order Information:

HI 38039 test kit come with 100 packets iron reagent, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38040 Iron Medium Range Test Kit by Hanna Instruments

Iron is naturally present in water in low concentrations, but it reaches high concentrations in wastewater effluents. The iron concentration in water needs to be monitored because it becomes harmful above certain levels.

In domestic water, for instance, iron can unpleasantly alter the taste, stain laundry, damage kitchenware and favor the growth of certain bacteria. Iron is also an indicator of ongoing corrosion in industrial plants or in water cooling and heating systems. Moreover, iron is normally monitored in mining wastewater to avoid contamination.

Generally, ground and surface water contains no more than 1 mg/L (ppm) iron; but due to mining and industrial drainage, higher levels of iron have been observed. Iron in water appears to be more of a nuisance than a hazard.

Order Information:

HI 38040 test kit come with 100 packets iron reagent, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38041 Iron High Range Test Kit by Hanna Instruments

Iron is naturally present in water in low concentrations, but it reaches high concentrations in wastewater effluents. The iron concentration in water needs to be monitored because it becomes harmful above certain levels.

In domestic water, for instance, iron can unpleasantly alter the taste, stain laundry, damage kitchenware and favor the growth of certain bacteria. Iron is also an indicator of ongoing corrosion in industrial plants or in water cooling and heating systems. Moreover, iron is normally monitored in mining wastewater to avoid contamination.

Generally, ground and surface water contains no more than 1 mg/L (ppm) iron; but due to mining and industrial drainage, higher levels of iron have been observed. Iron in water appears to be more of a nuisance than a hazard.

Order Information:

HI 38041 test kit comes with 100 packets iron reagent, 500 mL deionized water, checker disc, glass vials with caps (2), 3 mL plastic pipettes and long plastic pipette.

HI38042 Manganese Low Range Test Kit by Hanna Instruments

Manganese is not present in natural waters but it is found in various salts and minerals frequently associated with iron compounds. Manganese salts are used as fertilizer additives, in ferroalloys (in steel manufacture), in nonferrous alloys as it improves their corrosion resistance and hardness.

The HANNA test kit determines manganese concentration via a checker disc. The reaction between manganese and reagents causes a violet tint in the sample which is proportional to the manganese concentration.

Order Information:

HI 38042 test kit comes with 100 packets of buffer reagent A, 100 packets manganese reagent B, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38049 Ammonia Test Kit for Fresh Water by Hanna Instruments

Concentrations of ammonia in rivers and drinking water reservoirs indicate the presence of agriculture or urban pollution. When the concentration of ammonia is high, it can alter the smell and taste of water. In industrial applications, high concentrations of ammonia can cause corrosion in pipes. Ammonia is also monitored in aquariums and fish farming applications because of its toxicity to fish.

The HI 38049 test kit measures ammonia nitrogen concentration up to 3 ppm in fresh waters, employing the Nessler colorimetric method. Ammonia reacts with the reagent in basic solution to form a yellow compound. The absorbance of this colored product is proportional to the concentration of ammonia-nitrogen present in the aqueous sample.

Order Information:

HI 38049 test kit comes with 20 mL ammonia reagent (for fresh water), 20 mL Nessler reagent, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38050 Nitrate Test Kit for Soil and Irrigation Water by Hanna Instruments

The HANNA nitrate test kit for soil and irrigation water makes it possible to determine the need for nitrogen fertilization. It also obtains the best crop response and avoids over-fertilization.

Nitrate is reduced to nitrite in the presence of cadmium. The nitrite thus produced reacts with the reagent to yield an orange compound. The amount of color developed is proportional to the concentration of nitrate present in the aqueous sample.

The HANNA nitrate-nitrogen test can be performed the whole year round, but testing is particularly recommended during spring and late spring, when rainfall and temperature related bursts of microbiological activity often have great influence on the availability of nitrate-nitrogen.

Order Information:

HI 38050 test kit comes with 200 packets nitrogen reagent, checker disc, glass vials with caps (2), 10 g calcium sulfate, demineralizer bottle with filter cap for 12 L, soil sieve, 50 mL plastic test tube with screw cap, large funnel, 100 paper filter discs, brush, 50 mL calibrated vessels (2), 2 g sample cup, 3 mL plastic pipette and spoons (2).

HI38051 Nitrite Test Kit by Hanna Instruments

The HI 38051 HANNA test kit determines the nitrite concentration in water via checker disc.

Order Information:

HI 38051 test kit comes with 100 packets nitrite reagent, glass vials with caps (2) and 3 mL plastic pipette.

HI38054 Ozone Test Kit by Hanna Instruments

The HANNA test kit for ozone determines the ozone concentration in water via checker disc. The reaction between ozone and the reagent causes a pink tint in the sample which is proportional to the ozone concentration.

Order Information:

HI 38054 test kit comes with 100 packets ozone reagent, 500 mL deionized water, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38058 pH Test Kit (pH 4.0 - 10.0) by Hanna Instruments

pH represents acidity or alkalinity of an aqueous solution and is proportional to the hydrogen-ion concentration of the solution. Under neutral conditions water is dissociated into the (OH)— and H+ ions in equal ratio and hence it has a pH of 7. When bases or acids are added to a water solution they ionize, increasing the concentration of (OH)— or H+, respectively. Thus solutions with a pH of 1-3 contain strong acids, whereas those with a pH of 4-6 contain weak acids.

Weak bases result in solutions of pH 8-10 and strong bases in pH of 11-13.

Order Information:

HI 38058 test kit comes with 30 mL pH 4.0-10.0 reagent, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38061 Phosphate Test Kit by Hanna Instruments

The reaction between phosphate and the reagent causes a blue tint in the sample; adaptation of the ascorbic acid method.

Order Information:

HI 38061 test kit comes with 100 packets phosphate reagent, 500 mL deionized water, checker disc, glass vials with caps (2), 3 mL plastic pipette and long plastic pipette.

HI38066 Silica Low Range Test Kit by Hanna Instruments

Determination of silica concentration is an adaptation of the ASTM D859 method of the heteropoly blue method. The reaction between silica and reagents causes a blue tint in the sample which is proportional to the silica concentration.

Order Information:

HI 38066 test kit comes with 25 mL silica reagent A, 100 packets silica reagent B, 100 packets silica reagent C, checker disc, glass vials with caps (2) and 3 mL plastic pipette.

HI38067 Silica High Range Test Kit by Hanna Instruments

Determination of silica concentration is an adaptation of the ASTM D859 method of the heteropoly blue method. The reaction between silica and reagents causes a blue tint in the sample which is proportional to the silica concentration.

Order Information:

HI 38067 test kit comes with 25 mL silica reagent A, 100 packets silica reagent B, 100 packets silica reagent C, demineralizer bottle with filter cap for 12 L, checker disc, glass vials with caps (2), 3 mL plastic pipette and 1 mL syringe with tip.