简单介绍： 盐酸检测管14m hcl hydrogen chloride，measuring range 10 to 20 ppm 20 to 500 ppm 500 to 1000 ppm number of pump strokes 2 1 1/2 correction factor 1/2 1 2 sampling time ......
盐酸检测管14m hcl hydrogen chloride 产品详情
详情介绍：
盐酸检测管14m hcl hydrogen chloride
hydrogen chloride 4mhclperformance
measuring range
10 to 20 ppm
20 to 500 ppm
500 to 1000 ppm
number of pump strokes
2
1
1/2
correction factor
1/2
1
2
sampling time
1 minute per pump stroke
detecting limit
2.5 ppm (n=2)
color change
yellow → red
reaction principle
hydrogen chloride reacts with indicator to produce red stain.
hcl + indicator → chemical reaction compound
coefficient of variation 10% (for 20 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.
possible coexisting substances and their interferences (note)
substance
concentration
interference
change color by itself
hydrogen fluoride
600 ppm
plus error
produces red stain
nitric acid
1/10 time
plus error
produces red stain
nitrogen dioxide
1/2 time
plus error.
produces red stain
(500 ppm)
other substance measurable with this detector tube
calibration gas generation high pressure gas cylinder method
tlv-twa tlv-stel explosive range
- c 5ppm -