简单介绍： 醋酸丁酯检测管142 butyl acetate，measuring range 0.05 to 0.8% number of pump strokes 2 correction factor 1 sampling time 1.5 minutes per pump stroke detecting limit 0.0......
醋酸丁酯检测管142 butyl acetate 产品详情
详情介绍：
醋酸丁酯检测管142 butyl acetate
butyl acetate42ch3co2(ch2)3ch3(ch3co2c4h9)performance
measuringrange
0.05 to 0.8%
number of pumpstrokes
2
correctionfactor
1
samplingtime
1.5 minutes per pumpstroke
detectinglimit
0.002% (n=2)
colorchange
orange → darkgreen
reactionprinciple
ch3co2(ch2)3ch3 + cr6+ h2so4 → cr3+
coefficient ofvariation 15% (for 0.01 to 0.2%), 10% (for 0.2 to 0.8 %)
shelflife 3 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
sulfurdioxide
500 ppm
plus error
discolors green
hydrogensulfide
500 ppm
plus error
discolors dark green
alcohols, esters,ketones
- plus error
discolors dark green
propane
2000 ppm
plus error
dark green (whole layer)
aromatic hcs
500 ppm
plus error
discolors greenishbrown
calibration gasgeneration diffusion tubemethod
tlv-twa tlv-stel explosive range
150ppm 200ppm 1.7 to 7.6%