GASCO 2000 PPM R507 Refrigerant Calibration Gas Balance Air contained 58 liter cylinder with a C-10 connection, For Use with Any and All Gas Detectors, Cylinder connection C-10, Calibration Certificate NIST, Made in the USA, Calibration Refrigerant Gas is intended for use in Calibrating Refrigerant Gas Detection Equipment Only.

NOT INTENDED FOR CHARGING Air CONDITIONING EQUIPMENT