简单介绍： 醋酸检测管81l acetic acid ch3co2h，measuring range 0.125 to 0.25 ppm 0.25 to 10 ppm 10 to 25 ppm number of pump strokes 2 1 1/2 correction factor 1/2 1 2.5，)醋酸检测管价格
醋酸检测管81l acetic acid ch3co2h 产品详情
详情介绍：
醋酸检测管81l acetic acid ch3co2h
acetic acid no.81lch3co2h
performance
measuring range
0.125 to 0.25 ppm
0.25 to 10 ppm
10 to 25 ppm
number of pump strokes
2
1
1/2
correction factor
1/2
1
2.5
sampling time
1.5 minutes per pump stroke
detecting limit
0.05 ppm (n=2)
color change
pink → pale yellow
reaction principle
ch3co2h + base → reaction product
coefficient of variation 10% (for 0.25 to 3 ppm), 5% (for 3 to 10 ppm)
shelf life 2years
corrections for
temperature & humidity temperature correction is necessary
store the tubes at in the refrigerator to keep at 10ºc(50ºf) or below.
possible coexisting substances and their interferences (note)
substance
concentration
interference
change color by itself
ammonia higher than 2 times
-
no
chlorine, sulphur dioxide, nitrogen dioxide
+
pale yellow
formic acid, acetic anhydride
+
pale yellow
other substance measurable with this detector tube
substance
correction
no. of pump strokes
measuring range
acetic anhydride
factor: 0.6
1
0.15 to 6 ppm
acrylic acid
factor: 1.8
1
0.45 to 18 ppm
butyric acid
factor: 1.3
1
0.325 to 13 ppm
formic acid
factor: 2.0
1
0.5 to 20 ppm
isovaleric acid
factor: 1.5
1
0.38 to 15 ppm
methacrylic acid
factor: 1.4
1
0.35 to 14 ppm
propionic acid
factor: 1.0
1
0.25 to 10 ppm
valeric acid
factor: 1.5
1
0.38 to 15 ppm
calibration gas generation diffusion tube method
tlv-twa tlv-stel explosive range
- 15 ppm -