Cal Gas50%Ch4100Co10H2S17%O2Bal N2

50% Lel Methane / 17% Oxygen / 100 Ppm Carbon Monoxide / 10 Ppm Hydrogen Sulfide / Balance Nitrogen Draeger Equivalent Multi-Mixture Calibration Gas Used To Calibrate Draeger Gas Detection Equipment.Fully Compatible With Draeger Gas Detectors Requiring Specified Cal Gas Mixture.Precision Blended And Inspected To Industry Standards - National Institute Of Standards And Technology (Nist) Traceable And Certified.Made In The Usa By Gasco, Iso 9001:2008 Certified.