Calibration Gas

15% Oxygen, 60 ppm Carbon Monoxide, 20 ppm Hydrogen Sulfide, 2.5% Carbon Dioxide, 1.45% Methane 1 15% Oxygen, 60 ppm Carbon Monoxide, 20 ppm Hydrogen Sulfide, 2.5% Methane 1 2.5% Methane 1 20 ppm H2S and 10 ppm SO2 1 20.9% O2 1 20.9% Oxygen, Nitrogen Balance 1 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, 2.5% Methane, 18% Oxygen, N2 Balance 1 25 ppm Hydrogen Sulfide, 100 ppm Carbon Monoxide, Nitrogen, 3500 PPM Pentane (25% LEL), 18% Oxygen 1 25 ppm NO2 1 40 ppm Hydrogen Sulfide, N2 Balance 1 5% Carbon Dioxide 1 50 ppm H2S 1 Bump Gas CH4 50% LEL Air 1 Hydrogen Sulfide 10 ppm, Carbon Monoxide 50 ppm, Methane 2.5% (50% LEL), Oxygen 18%, Nitrogen Balance 1 5 ppm Nitrogen Dioxide 2 75.51 - 80.49% Nitrogen, 19.5 - 23.5% Oxygen, 0.00001 - 0.99% Sulfur Dioxide 2 <= 21.5% Oxygen, <= 2% Hydrogen, Balance Nitrogen 2 0.0005 - 50% Carbon Dioxide, 5.6 - 8% Butane, Balance Nitrogen 1 0.001 - 19.49% Oxygen, 0.1 - 0.75% Pentane, 100 ppm 0.005 - 0.09% Carbon Monoxide, 25 ppm 0.001 - 0.025% Hydrogen Sulfide, 5 ppm 0.0001 - 0.05% Sulfur Dioxide in Balance Nitrogen 1 0.6% Propane 1 1 ppm 0.00001 - 0.0499% Phosphine, 99.9501 - 99.99999% Nitrogen 1 1.45% CH4, 15% O2, 60% CO, 20% H2S, 10% SO2 1 10 ppm C4H10, N2 1 10 ppm Hydrogen Cyanide 1 10 ppm Sulfur Dioxide 1 100 ppm C4H8 1 100 ppm CO, 18% O2 and 25% LEL Pentane 1 100 ppm CO, 2.5% Methane (50% LEL) and 18% O2 1 100 ppm Carbon monoxide, 5 ppm Nitrogen Dioxide, 18% Oxygen, 2.5% Methane 1 100 ppm H2S 1 100 ppm Hydrogen Cyanide 1 1000 ppm CO2, N2 1 125 ppm 0.0001 - 0.05% Hydrogen Sulfide, 99.95 - 99.9999% Nitrogen 1 2.5% CH4, 20.9% O2, 25 ppm H2S, 100 ppm CO, N2 Balance 1 20 ppm Carbon Monoxide 1 200 ppm CO, 25 ppm H2S, 25% LEL Pentane and 18% O2 1 25 ppm Ammonia, N2 Balance 1 25 ppm H2S Balance Air 1 25 ppm H2S, 100 ppm CO, 1.25% CH4 1 25 ppm H2S, 18% O2, 25% LEL Pentane 1 25 ppm Hydrogen Sulfide 1 25 ppm SO2, N2 Balance 1 25% LEL Propane 1 300 ppm Carbon Monoxide 1 35 ppm SO2/N2 1 5 ppm Benzene, Balance Air 1 50 ppm 0.001 - 0.0999% Carbon Monoxide, 76.4001 - 80.499% Nitrogen, 19.5 - 23.5% Oxygen 1 50 ppm Ammonia 1 50 ppm Carbon Monoxide 1 50% LEL CH4, 100 ppm CO, 25 ppm H2S, 17% O2 1 50% LEL Hydrogen 1 72.975 - 99.9965% Nitrogen, 0.0015 - 23.5% Oxygen, 0.0005 - 2.5% Methane, 0.0005 - 1% Carbon Monoxide, 0.001 - 0.025% Hydrogen Sulfide 1 74.7 - 79.099% Nitrogen, 20.9% Oxygen, 0.0001 - 4.4% Methane 1 75.75 - 80.4% Nitrogen, 19.5 - 23.5% Oxygen, 0.1 - 0.75% n-Pentane 1 76.4001 - 80.499% Nitrogen, 19.5 - 23.5% Oxygen, 0.001 - 0.0999% Carbon Monoxide 1 80.25 - 99.9% Nitrogen, 0 - 19% Oxygen, 0.1 - 0.75% Pentane 1 99.999% Methane 1 <= 21.5% Oxygen, <= 2.5% Methane, Balance Nitrogen 1 > 99.99% Nitrogen 1 Carbon Dioxide, Hydrogen Sulfide, Nitrogen 1 Propane, C3H8 50%LEL 6D Air 1

CO2 1 Carbon Monoxide, Methane, Oxygen, Hydrogen Sulfide, Balance Nitrogen 1 Hydrogen Chloride 1 Hydrogen Sulfide, Carbon Monoxide, Methane, Oxygen 1 Hydrogen Sulfide, Sulphur Dioxide and Nitrogen 1 LEL CH4 1 Oxygen 1 Zero Air 1 Carbon Monoxide 3 Propane 3 HCN 2 Nitrogen 2 10 ppm Sulfur Dioxide 1 100 ppm Hydrogen 1 5 ppm Sulfur Dioxide 1 50 ppm Carbon Monoxide 1 500 ppm Hydrogen 1 60 ppm Carbon Monoxide, 20 ppm Hydrogen Sulfide 1 Ammonia 1 Ammonia, N2 1 Balance Nitrogen 1 Benzene 1 Butane 1 CH4, CO, H2S, O2 1 CH4, O2, CO, H2S, SO2 1 CO, NO2, O2, Methane 1 CO2, N2 1 Carbon Monoxide, Hydrogen Sulfide, Oxygen, Pentane and Balance Nitrogen 1 Carbon Monoxide, Oxygen, Pentane and Balance Nitrogen 1 H2S, CO, CH4, O2 1 Hydrogen and Balance Air 1 Isobutylene, N2 1 O2, H2S, Pentane 1 Oxygen, Pentane, Carbon Monoxide, Hydrogen Sulfide, Sulfur Dioxide, Nitrogen 1 Pentane 1 Phosphine 1 SO2 1 SO2, N2 1 Sulfur Dioxide (SO2) 1

4-1/2 in dia x 12 in H 1 3 in dia x 10-3/4 in H 6 3-1/2 in dia x 14-1/2 in L 4 3-1/4 in dia x 13-2/3 in H 3 3-1/2 in dia x 13-1/2 in H 2 3-1/2 in dia x 15 in H 2 3-1/4 in dia x 14 in H 2 2-3/4 in dia x 10-3/4 in L 1 2-3/4 in dia x 11-1/2 in H 1 2-7/8 in dia x 11-1/2 in H 1 2-7/8 in dia x 11-1/2 in L 1 2-9/10 in dia x 11 in H 1 2.9 in dia x 10-3/4 in H 1 3 in dia x 13-1/4 in H 1 3 x 10-3/4 in 1 3 x 13-3/4 in 1