Hydrogen Cyanide (HCN) 58 Liter Cylinder 5 PPM / N2

Thank you for the opportunity to assist. With 5 ppm concentration, it is not lethal. This gas cylinder is just being used for testing purposes. for more info about this, you could check out this link: https://www.cdc.gov/niosh/pel88/74-90.html#:~:text=The%20ACGIH%20has%20a%2010,as%20a%2010%2Dminute%20ceiling.