Draeger CH21101 Trichloroethane 50/d Detector Tubes (5 tests per box)

Application Range:

• Standard Measuring Range: 50 to 600 ppm
• Number of Strokes n: 2 + 3 desorption strokes in clean air
• Time for Measurement: approx. 1.5 min
• Standard Deviation: ± 10 to 15 %
• Color Change: grey → brown red

Ambient Operating Conditions:

• Temperature: 15 to 40 °C
• Absolute Humidity: 5 to 15 mg H2O / L

Reaction Principle:

• a) 1,1,1-trichloroethane + IO3 –/H2S2O7 → Cl2
• b) Cl2+ o-tolidine ä brown red reaction product

Cross Sensitivity:

• Other chlorinated hydrocarbons are indicated, but with different sensitivities.
• In the presence of aromatic hydrocarbons the indication is too low (e.g. 200 ppm 1,1,1-trichloroethane and 200 ppm toluene, the reading amounts to 1/4 only, i.e. 50 ppm).