GASCO 600L-BTEX Calibration Gas 1 PPM Benzene, 10 PPM Toluene, 10 PPM Ethylbenzene, 20 PPM m-Xylene, 20 PPM o-Xylene, Balance Air contained in a 600 Liter Disposable Aluminum Cylinder, For Use with Any and All Gas Detectors, Cylinder Connection: CGA 590 ,Calibration Certificate NIST, Made in the USA
Low Pressure 500 PSI in Cylinder