Draeger 8101781 Water Vapor 1/b Detector Tubes (10 tests per box)

Application Range:

• Standard Measuring Range: 20 to 40 mg/L / 1 to 18 mg/L
• Number of Strokes n: 1 / 2
• Time for Measurement: approx. 20 s / approx. 40 s
• Standard Deviation: ± 15 to 20 %
• Color Change: yellow → turquoise-blue

Ambient Operating Conditions:

• Temperature: 0 to 50 °C
• Absolute Humidity: up to 100% r.h.
• Condensation in the tube causes measurement errors.
• If high r.h. (in excess of 80%) is to be expected, the temperature of the tube should be at least 5 °C higher than ambient temperature.
• Given a r.h. below 80%, the temperature of the tube should be at least equal to the ambient temperature.

Reaction Principle:

• H2O + Mg(CIO4)2 → turquoise-blue reaction product

Cross Sensitivity:

• Acid gases are liable to cause plus errors. Basic gases are liable to cause minus errors.