GASCO 34L-PH3-5: Phosphine 5 PPM, Balance Nitrogen Calibration Gas contained in a 34 Liter Aluminum Cylinder, For Use with Any and All Gas Detectors, Cylinder connection C-10 5/8"-18 UNF, Calibration Certificate NIST, Made in the USA

GASCO Phosphine (PH3) Calibration Gas Cal Gas Direct Incorporated offers thousands of Calibration Gas Mixtures for a Variety of Monitors and Gas Detectors. GASCO Authorized Distributor of High Precision Calibration Gases. NIST Standards all Made in United States.