简单介绍： 三氯乙烯检测管132l trichloroethylene cl2c:chcl，measuring range 1 to 2ppm 2 to 25ppm 25 to 70ppm number of pump strokes 2 1 1/2 correction factor 1/2，三氯乙烯检测管价格，三氯乙烯检测管13......
三氯乙烯检测管132l trichloroethylene 产品详情
详情介绍：
三氯乙烯检测管132l trichloroethylene
trichloroethylene32lcl2c:chclperformance
measuringrange
1to 2ppm
2to 25ppm
25to 70ppm
number of pump strokes
2
1
1/2
correction factor
1/2
1
2.8
samplingtime
1 minute per pumpstroke
detectinglimit
0.4 ppm (n=2)
colorchange
yellow →purple
reactionprinciple
cl2c:chcl + pbo2 +h2so4 →hcl
hcl + basic compound → chloride
coefficient ofvariation 10% (for1 to 5 ppm), 5% (for 5 to 25 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 byitself
nitric oxide,nitrogen dioxide
- no effect
nodiscoloration
hydrogen chloride,chlorine, bromine
- plus error
produce reddishpurple stain
acetone
200 ppm
no effect
nodiscoloration
unsaturatedhalogenated hcs
- plus error
produces reddishpurple stain
aromatichydrocarbons
100ppm
minus error
nodiscoloration
othersubstance measurable with this detector tube
substance
correction factor
pump strokes
measuring range
benzylchloride
0.8
2
1.6 to 20ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
50ppm 100ppm -