Phosphine 25/a, 200 - 10,000 PPM / 25 - 900 PPM, Part # 8101621, 10 Tests 

Application Range

Standard Measuring Range: 200 to 10,000 ppm/ 25 to 900 ppm

Number of Strokes n: 1 / 10

Time for Measurement: approx. 1.5 min / approx. 10 min

Standard Deviation: ± 10 to 15 %

Color Change: yellow š dark brown

Ambient Operating Conditions

Temperature: 0 to 40 °C

Absolute Humidity: < 30 mg H2O / L

Reaction Principle

PH3 + Au3+ š Au (colloidal)

Cross Sensitivity

Arsine and antimony hydride are indicated, but with lower sensitivities. Hydrogen sulfide, ammonia, hydrochloric acid and mercaptans are retained in the pre-cleanse layer.