硝酸检测管15l hno3 nitric acid 产品详情
详情介绍：
硝酸检测管15l hno3 nitric acid nitric acid5l hno3performance
measuring range
0.1 to 1 ppm
1 to 20 ppm
20 to 40 ppm
number of pump strokes
2 to 10
1
1/2
correction factor
1/2 to 1/10
1
2
sampling time
45 seconds per pump stroke
detecting limit
0.05 ppm (n=10)
color change
yellow →reddish purple
reaction principle
hno3 + indicator → chemical reaction product
coefficient of variation 15% (for 1 to 5 ppm), 10% (for 5 to 20 ppm)
shelf life 3 years
corrections for
temperature & humidity humidity correction is necessary
store the tubes at cool and dark place.
possible coexisting substances and their interferences (note)
substance
concentration
interference
change color by itself
hydrogen chloride
1/10 time
plus error
produces reddish purple stain
chlorine
- no effect
bleach the discoloration
carbon monoxide
- no effect
no discoloration
nitrogen dioxide
- no effect
no discoloration
organic solvents
- no effect
no discoloration
other substance measurable with this detector tube
substance
correction
pump strokes
measuring range
hydrogen bromide
0.8
1
0.8 to 16 ppm
trichloroacetic acid
by scale
1
1 to 37.5 ppm
calibration gas generation high pressure gas cylinder method
tlv-twa tlv-stel explosive range
2ppm 4ppm -