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发布时间：2010-12-20
Nitrogen dioxide No.9DL
NO2
Performance
Measuring Range
0.01 to 3.0 ppm
Sampling Hours
1 to 24 hours
Detecting Limit
0.01 ppm
Color Change
White → Green
Reaction Principle
ABTS + NO2 → Green product
Coefficient of Variation 10% (for 0.01 to 3.0 ppm-hr)
Shelf Life 1 Year
Corrections for
temperature & humidity Unnecessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance
Concentration
Interference
Change color by itself
Carbon monoxiide
10ppm No
No discoloration (10 ppm)
Chlorine 0.07 ppm
No
No discoloration (0.07 ppm)
Ozone 0.045 ppm
No
No discoloration (0.045 ppm)
sulphur dioxide 0.1 ppm
No discoloration (0.1 ppm)
Carbon dioxide 600 ppm
No
No discoloration (600 ppm)
Formaldehyde 0.1 ppm
No discoloration (0.1 ppm)
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
3 ppm 5 ppm -
