![4-Gas Mix for MP400/MP420: 50 ppm CO/ 10 ppm H2S/ 2.5% CH4/ 18% O2, Balance N2, C-10, 58L - Disposable cylinder](http://shop.mpowerinc.com/cdn/shop/products/GasCylDisposable58-LC10Black_d9ac0eb5-8482-4f47-b5a8-e5ad6433d872_{width}x.jpg?v=1663558331)
4-Gas Mix for MP400/MP420: 50 ppm CO/ 10 ppm H2S/ 2.5% CH4/ 18% O2, Balance N2, C-10, 58L - Disposable cylinder
Note: 2.5% CH4 is equal to 50% LEL methane as defined in the US by the NFPA
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