Trichloroethylene 2/a, 20 - 250 PPM / 2 - 50 PPM, Part # 6728541, 10 Tests 

Application Range

Standard Measuring Range: 20 to 250 ppm / 2 to 50 ppm

Number of Strokes n: 3 / 5

Time for Measurement: approx. 1.5 min / 2.5 min

Standard Deviation: ± 10 to 15 %

Color Change: pale grey š orange

Ambient Operating Conditions

Temperature: 10 to 40 °C

Absolute Humidity: 5 to 15 mg H2O / L

Reaction Principle

Cl2 + o-tolidine š orange reaction product

Cross Sensitivity

Other chlorinated hydrocarbons are indicated, but with different sensitivities. Free halogens and hydrogen halides in the TLV range are also indicated. It is impossible to measure trichloroethylene in the presence of these substances. Petroleum hydrocarbons cause low readings.