Phosphine 0.1/c, 0.5 - 3 PPM / 0.1 - 1.0 PPM, Part # 8103711, 10 Tests 

Application Range

Standard Measuring Range: 0.5 to 3 ppm / 0.1 to 1.0 ppm

Number of Strokes n: 1 / 3

Time for Measurement: approx. 1 min / approx. 2.5 min

Standard Deviation: ± 10 to 15 %

Color Change: yellow š red

Ambient Operating Conditions

Temperature: 2 to 40 °C

Absolute Humidity: < 40 mg H2O / L

Reaction Principle

HgCI2 + PH3 š Hg-phosphide + HCI HCI + pH-Indicator š red reaction product

Cross Sensitivity

A maximum of 6 ppm sulphur dioxide or 15 ppm hydrogen chloride have no influence on the reasing. Higher concentration result in plus errors. Ammonia (>100 ppm) result in minus errors. Hyrogen sulphide and Arsine are indicated with different sensitivity. 30 ppm hydrocyanic acid does not affect.