Chlorine Calibration Gas |  Cl2 Cal Gas | is used for the Calibration and Maintenance of Gas Detectors and Sensors. All of our GASCO Chlorine Calibration Gas Cylinders ship with a Certificate of Analysis (COA). GASCO Calibration Gas meets or exceeds the requirements of the Original Gas Detection Equipment Manufactures Specifications. GASCO Calibration Gas is National Institute of Standards and Technology (NIST) Traceable 

Shelf Life
Chlorine (CI2) (34 Liter 2 PPM to 4 PPM) 3 Months
Chlorine (CI2) (58 Liter 2 PPM to 4 PPM) 6 Months
Chlorine (CI2) 5 PPM and higher 12 Months