Toluene 100/a, 100 - 1,800 PPM, Part # 8101731, 10 Tests 

Application Range

Standard Measuring Range: 100 to 1,800 ppm

Number of Strokes n: 10

Time for Measurement: approx. 1.5 min

Standard Deviation: ± 10 to 15 %

Color Change: white š brown violet

Ambient Operating Conditions

Temperature: 0 to 40 °C

Absolute Humidity: < 30 mg H2O / L

Reaction Principle

Toluene + SeO2 + H2SO4 š brown violet reaction product

Cross Sensitivity

Xylenes are indicated with approximately the same sensitivity, but with a bluish violet color. Benzene discolors the entire indicating layer a diffuse yellow brown. Petroleum hydrocarbons discolor the entire indicating layer a diffuse reddish brown. Methanol, ethanol, acetone and ethyl acetate do not interfere in the range of their TLVs.