Stoddard Solvent

Measuring Range 50 to 8000 mg/m3
Number of Pump Strokes 1
Correction Factor 1
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 5 mg/m3 (n=1)
Colour Change White → Brown (ring)
Reaction Principle Stoddard Solvent + I2O5 + H2S2O7 → I2
Coefficient of Variation 15% (for 50 to 300 mg/m3), 10% (for 300 to 8000 mg/m3)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Carbon monoxide 0.1% + Pale brown (whole layer)
Acetylene, Hexane, Ethylene 0.2% + Pale brown (whole layer)
Alcohols, Ketones,Esters   No Pale brown (whole layer)
Aromatic hydrocarbons   + Dark green
Calibration gas generation Vaper pressure method
TLV-TWA TLV-STEL Explosive range
100 mg/m3 - 0.8 % or higher

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