Gastec 211M 硫化物检测管(2~300 ppm)

Indicator:  2 ~ 300 ppm
Measuring Range:  2 ~ 300 ppm
Sampling Time:  2 minute
Colour Change: White → Brown
Reaction Principle: S2- + Pb(CH3COO)2 → PbS
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 2 to 300 ppm
Sampling Time 2 minutes
Detecting Limit 0.5 ppm
Colour Change White → Brown
Reaction Principle S2- + Pb(CH3COO)2 → PbS
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Changes colour by itself to
Cl- ≧ 15000 ppm + No
CrO42- 50 ppm Yellow
CO32- 500 ppm + No
SO32- 200 ppm No
S2O32- 100 ppm + No
Detector tubes for dissolved substances
(i.e. in solution).
Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
Liquid detector tube
 
Ozone: 218
Chloride ion: 221L / 221LL
Mercury: 271
Hexavalent chromium: 273
Bivalent iron: 281
Copper: 284
Zinc: 285
Nicke: 291
To measure, simply immerse the detector tube in a sample of liquid (placed in a beaker or other container). Anyone can measure concentrations quickly, easily and accurately on site.

* Adjustment for pH is required when measuring with liquid detector tubes.
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