4-Gas Mix for MP400/MP420: 100 ppm CO/ 25 ppm H2S/ 2.5% CH4/ 18% O2, Balance N2, C-10, 58L - Re-usable cylinder

4-Gas Mix for MP400MP420: 100 ppm CO/ 25 ppm H2S/ 2.5% CH4/ 18% O2, Balance N2, C-10, 58L - Re-usable cylinder

Note: 2.5% CH4 is equal to 50% LEL methane as defined in the US by the NFPA

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