Isobutylene Calibration Gas or Cal Gas with a concentration of 25ppm balance Air contained in 103L Aluminum Alloy Cylinder that is used for calibration and maintenance of gas detectors. Connection size C-10, Pressure 1000 PSI, Cylinder 103L Aluminum Alloy, Diameter 3.3 inches, Cylinder Height 13.6 inches, Weight 48 oz, Contents 3.6 cu. ft. Use with regulators 70,73-PBR,74-DAF,70-FMV
NIST Calibration Certificate Included. GASCO Calibration Gas is ISO 9001 Certified.