Gastec 7J Quick-measuring Detector tubes Phosphine PH3 (2.5 ~ 1000 ppm)

Indicator: 50 to 500 ppm
Measuring Range:
+ 2.5 to 25 ppm, Number of Pump Strokes 2 to 10
+ 25 to 500 ppm , Number of Pump Strokes 1
+ 500 to 1000 ppm, Number of Pump Strokes 1/2
Sampling Time: 1 minutes per pump stroke
Colour Change: White → Pale yellow
Reaction Principle: 2PH3 + 6HgCl2 + 3H2O → Hg3P2 3HgCl23H2O+6HCl
Coefficient of Variation: 10% (for 2.5 to 100 ppm), 5% (for 100 to 500 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Catalog

Manual

Measuring Range	2.5 to 25 ppm 25 to 500 ppm 500 to 1000 ppm
Number of Pump Strokes	2 to 10 1 1/2
Correction Factor	1/2 to 1/10 1 2
Sampling Time	1 minute per pump stroke
Detecting Limit	1 ppm (n = 10)
Colour Change	White → Pale yellow
Reaction Principle	2PH3 + 6HgCl2 + 3H2O → Hg3P2 3HgCl23H2O+6HCl
Coefficient of Variation	10% (for 2.5 to 100 ppm), 5% (for 100 to 500 ppm)
Shelf Life	3 Years
Corrections for temperature & humidity	Unnecessary
Store the tubes at cool and dark place.