Gastec 9D 二氧化氮被动发现管NO2(0.1~30 ppm)

Indicator: 0.1 ~ 30 ppm
Measuring Range: 0.1 ~ 30 ppm
Sampling Hours: 1 to 10 hours
Colour Change: White → Yellow
Reaction Principle: NO2 + o-Toluidine → Yellow product 
Coefficient of Variation: 10% (for 1 to 30 ppm-hr)
Nr. of tests: 10

Detail

Catalog

Performance
Measuring Range 0.1 to 30 ppm
Sampling Hours 1 to 10 hours
Detecting Limit 0.05 ppm (10 hours)
Colour Change White → Yellow
Reaction Principle NO2 + o-Toluidine → Yellow product
Coefficient of Variation 10% (for 1 to 30 ppm-hr)
Shelf Life 1 Year
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Bromine,Chlorine   + Yellow
Ammonia
Carbon monoxide
Nitric oxide
sulphur dioxide
Organic gases and vapour
  No No
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
0.2 ppm(2014) - -
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