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GroStar Series Pen Testers for Growers

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  1. Apera GroStar GS1 pH Pen Tester Kit - AI101GQUICK VIEW

    Apera GroStar GS1 pH Pen Tester Kit - AI101G

    Brand: Apera Instruments | Item #: AI101G

    $116.00
  2. Apera GroStar GS2 Soil pH Pen Tester Kit - AI102GQUICK VIEW

    Apera GroStar GS2 Soil pH Pen Tester Kit - AI102G

    Brand: Apera Instruments | Item #: AI102G

    $257.00
  3. Apera GroStar GS3 EC/500ppm/700ppm Pen Tester Kit - AI103GQUICK VIEW

    Apera GroStar GS3 EC/500ppm/700ppm Pen Tester Kit - AI103G

    Brand: Apera Instruments | Item #: AI103G

    $114.00
  4. Apera GroStar GS4 pH/EC/500ppm/700ppm Combo Pen Tester Kit - AI104GQUICK VIEW
    $179.00
  5. Apera GroStar GS1-P pH/ORP Pen Tester Kit with ORP Probe - AI201GQUICK VIEW
    $176.00
  6. Apera GroStar GS4-P pH/EC/500ppm/700ppm/ORP Combo Pen Tester Kit with ORP Probe - AI204GQUICK VIEW
  7. Apera 5021 Compact Conductivity Pen - AI231QUICK VIEW

    Apera 5021 Compact Conductivity Pen - AI231

    Brand: Apera Instruments | Item #: AI231

    $50.00
  8. Apera 5031 Compact TDS Pen - AI232QUICK VIEW

    Apera 5031 Compact TDS Pen - AI232

    Brand: Apera Instruments | Item #: AI232

    $50.00
  9. Apera 5041 Compact ORP Pen - AI239QUICK VIEW

    Apera 5041 Compact ORP Pen - AI239

    Brand: Apera Instruments | Item #: AI239

    $70.00
  10. Apera 5051 Compact Salinity Pen - AI236QUICK VIEW

    Apera 5051 Compact Salinity Pen - AI236

    Brand: Apera Instruments | Item #: AI236

    $50.00
  11. Apera 5052 Compact Saltwater Salinity Pen - AI235QUICK VIEW

    Apera 5052 Compact Saltwater Salinity Pen - AI235

    Brand: Apera Instruments | Item #: AI235

    $85.00
  12. Apera 5053 Compact NaCl Salinity Pen - AI237QUICK VIEW

    Apera 5053 Compact NaCl Salinity Pen - AI237

    Brand: Apera Instruments | Item #: AI237

    $85.00
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