Draeger 8101611 Phosphine 0.01/a Detector Tubes (10 tests per box)

Application Range:

• Standard Measuring Range: 0.1 to 1.0 ppm / 0.01 to 0.3 ppm
• Number of Strokes n: 3 / 10
• Time for Measurement: approx. 2.5 min / approx. 8 min
• Standard Deviation: ± 10 to 15 %
• Color Change: yellow → red

Ambient Operating Conditions:

• Temperature: 2 to 40 °C
• Absolute Humidity: < 20 mg H2O / L

Reaction Principle:

• PH3 + HgCI2 ä HCI + Hg-phosphide HCI + pH indicator → red reaction product

Cross Sensitivity:

• Arsine is indicated with different sensitivity. Up to 6 ppm sulfur dioxide or 15 ppm hydrochloric acid does not interfere, but higher concentrations cause plus errors.
• More than 100 ppm ammonia leads to minus errors.
• 30 ppm hydrocyanic acid does not affect the 3 stroke test, but with the 10 stroke test minus errors of up to 50 % can occur.