Gas Clip Technologies GCT-Q-116 Calibration Gas

When calibrating your monitors with the Clip Dock or manually, use NIST traceable gas proved by Gas Clip Technologies in either 58 or 116 liter bottles. Standard Quad gas mixture – H2S/25 ppm, CO/100 ppm, O2/18% vol. and CH4/2.5% vol. (50% LEL).