简单介绍： 丙酮检测管151l acetone ch3coch3，measuring range 50 to 4000 ppm 4000 to 12000 ppm number of pump strokes 2 1 correction factor 1 3 sampling time 2 minutes per pump str......
丙酮检测管151l acetone ch3coch3 产品详情
详情介绍：
丙酮检测管151l acetone ch3coch3
acetone 51lch3coch3
performance
measuringrange
50 to 4000 ppm
4000 to 12000ppm
number of pump strokes
2
1
correction factor
1
3
samplingtime
2 minutes per pumpstroke
detectinglimit
5 ppm (n=2)
colorchange
yellow → red
reactionprinciple
ch3coch3 + (nh2oh)3 • h3po4 → h3po4+ base
→ h3po4+base
coefficient ofvariation 15% (for50 to 500 ppm), 10% (for 500 to 4000 ppm)
shelflife 2years
correctionsfor
temperature & humidity temperature correction is necessary
store the tubes inthe refrigerator to keep at 10oc (50of) orbelow.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
acrolein,acetaldehyde
1/10 time
plus error
produce reddishstain
aromatichydrocarbons
- no effect
nodiscoloration
methyl isobutylketone
- plus error
produce reddishstain
methyl ethylketone
- plus error
produce reddishstain
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
methyl ethylketone
factor: 0.42
5
21 to 1680 ppm
propionaldehyde
factor: 0.47
2
24 to 1880ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
500 ppm 750ppm 2.1to 13%