Draeger CH21201 Phosphine 50/a Detector Tubes (10 tests per box)

Application Range:

• Standard Measuring Range: 50 to 1,000 ppm
• Number of Strokes n: 3
• Time for Measurement: approx. 2 min
• Standard Deviation: ± 10 to 15 %
• Color Change: yellow → brown black

Ambient Operating Conditions:

• Temperature: 0 to 50 °C
• Absolute Humidity: < 40 mg H2O / L

Reaction Principle:

• PH3 + Au3+ → Au (colloidal)

Cross Sensitivity:

• Arsine and antimony hydride are indicated, but with different sensitivities.
• Hydrogen sulfide, mercaptans, ammonia, carbon monoxide, sulfur dioxide and hydrochloric acid in the TLV range do not interfere.

Extension of the Measuring Range:

• Using n = 10, multiply the reading by 0.3; the range of measurement is 15 to 300 ppm.