Chemistry Standards

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Calibrated Device 
(1) Gas Concentration Dilution Device (CO in N2, CO2 in N2, CH4
in Air, NO in N2, SO2 in N2)
(2) Gas Concentration Analysis Equipment (C2H5OH in Air)
Range 
(1) CO in N2: (0 to 100) % @ (1 to 100) μmol/mol 
     CO2 in N2: (0 to 100) % @ (50 to 5000) μmol/mol 
     CH4 in Air: 0.10 to 100) % @ (1 to 20) mmol/mol    
     NO in N2: (0 to 100) % @ (1 to 2000) μmol/mol
     SO2 in N2: (0 to 100) % @ (1 to 2000) μmol/mol
(2) C2H5OH in Air: (0 to 1200) μmol/mol
Uncertainty 
(1) CO in N2: 0.02 %
     CO2 in N2: 0.03 %
     CH4 in Air: 0.15 %
     NO in N2: 0.11 % @ (1 to 50) μmol/mol, 0.26 % @ (50 to 2000)
μmol/mol 
    SO2 in N2: 0.048 % @ (1 to 50) μmol/mol, 0.13 % @ (50 to 2000)
μmol/mo
(2) 3 μmol/mol
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