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Calibration GasesApollo Safety offers a wide range of NIST traceable calibration gases for all calibration needs. Ammonia (NH3) Available in 10, 25, 100, 200 PPM Carbon Monoxide (CO) Available in 25, 50, 100, 300, 500 PPM Chlorine (CL2) Available in 2, 5, 10 PPM Hydrogen (H2) Availble in 10% LEL, 50 % LEL Hydrogen Sulfide (H2S) Hydrogen Cyanide (HCN) Methane (CH4) Available in 5% LEL, 10% LEL, 50% LEL and 99.9%/Vol Nitrogen (N2) Available in in 99.9% / Vol Sulfur Dioxide (SO2) Available in 5 , 10 PPM Silane (SiH4) Available in 5, 10 PPM Hexane15% / LEL Many other concentrations and custom calibration mixtures also available. Call toll-free 800-813-5408 to speak with one of our gas detection experts. Prices are subject to change without notice due to ongoing tariff adjustments and market conditions. For the most accurate and up-to-date pricing, please contact us directly.
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