简单介绍： 醋酸丁酯气体检测管142l butyl acetate，醋酸丁酯(乙酸丁酯)butyl acetate，strokes 2 correction factor 1 sampling time 4 minutes per pump stroke detecting limit 2 ppm (n=2)醋酸丁酯检测管价格
醋酸丁酯气体检测管142l butyl acetate 产品详情
详情介绍：
醋酸丁酯气体检测管142l butyl acetate
butyl acetate42lch3co2(ch2)3ch3(ch3co2c4h9)performance
measuringrange
10 to 300 ppm
number of pumpstrokes
2
correctionfactor
1
samplingtime
4 minutes per pumpstroke
detectinglimit
2 ppm (n=2)
colorchange
yellow → dark brown →pale blue after few minutes
reactionprinciple
ch3co2(ch2)3ch3 + cr6+ + h2so4 → cr3+
coefficient ofvariation 15% (for 10 to 100ppm), 10% (for 100 to 300 ppm)
shelflife 2 years
correctionsfor
temperature & humidity temperature correction is necessary
store the tubes at cool and darkplace.
possible coexisting substances and theirinterferences (note)
substance
concentration
interference
change color by itself
alcohols
- plus error
dark brown (few minuteslater)
pale blue
ketones
- plus error
esters
- plus error
aromatic hcs
- pluserror
othersubstance measurable with this detector tube
substance
correction
no. of pumpstrokes
measuringrange
isobutyacrylate
factor: 0.26
2
2.6 to 78 ppm
butylacrylate
factor 0.7
2
7 to 210ppm
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
150ppm 200ppm 1.7 to 7.6%