简单介绍： 气体检测管93 acrolein ch2:chcho，number of pump strokes 4 2 correction factor 1/3 1 sampling time 2 minutes per pump stroke detecting limit 2 ppm (n=4)气体检测管价格
气体检测管93 acrolein ch2:chcho 产品详情
详情介绍：
气体检测管93 acrolein ch2:chcho
acrolein no.93ch2:chcho
performance
measuringrange
3.3to 10ppm
10to 800ppm
number of pumpstrokes
4
2
correctionfactor
1/3
1
samplingtime
2 minutes per pumpstroke
detectinglimit
2 ppm (n=4)
colorchange
yellow → red
reactionprinciple
3ch2chcho + (nh2oh)3 • h3po4 → h3po4 + base
→ phosphate
coefficient ofvariation 10% (for10 to 200 ppm), 5% (for 200 to 800 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
ammonia
- minus error
nodiscoloration
sulfurdioxide
1/5 time
plus error
nodiscoloration
acetaldehyde
1/5 time
plus error
produces redstain
acetone
1 time
plus error
produces redstain
methyl ethylketone
3 times
plus error
produces redstain
othersubstance measurable with this detector tube
substance
correctionfactor
pump strokes
measuringrange
formaldehyde
25
1
250 to 20000ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
- c 0.1ppm 2.8 to 31%