EPA Standards  [ Return to  The Environment  ]

Protocol mixtures

Below is a list of the general ranges of EPA protocols maufactured by Air Liquide using strict G1 procedures.

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Minor Components Balance Gas  Shelf-life
100 ppm to 22% CO2 Nitrogen 36 months
10 ppm to 8% CO Air/Nitrogen 36 months
3 ppm to 4 ppm% NO Nitrogen 6 months
4 ppm to 5000 ppm NO Nitrogen 24 months
5 ppm to 500 ppm NO2 Air 24 months
0.1% to 24.9% O2 Nitrogen 36 months
10 ppm to 1000 ppm CH4 Air/Nitrogen 36 months
3 ppm to 250 ppm C3H8 Air/Nitrogen 36 months
10 ppm to 40 ppm SO2 Air/Nitrogen 6 months
40 ppm to 500 ppm SO2 Air/Nitrogen 24 months
500 ppm to 1% SO2 Air/Nitrogen 36 months
5 ppm to 200 ppm H2S Nitrogen 12 months
100 ppm to 1000 ppm H2S Nitrogen 12 months

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