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Khí Chuẩn 1.45% CH4, 20ppm H2S, 60ppm CO, 15% O2 in N2
Khí Chuẩn 200ppm SO2, 1000ppm NO, 1000ppm CO, 99,78% N2
Khí Chuẩn 25ppm H2S, 100ppm CO, 0.35% C5H12 và 19% O2 in N2
Khí Chuẩn 500ppm NO, 500ppm CO, 300ppm SO2, 99,89% N2
Khí Chuẩn NO 1000ppm, NO2 200-400ppm, SO2 2000ppm, CO 2000ppm Balance N2
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