氯乙烯檢測(cè)管131LB Vinyl chloride 的詳細(xì)介紹
 氯乙烯檢測(cè)管131LB Vinyl chloride

Vinylchloride         No.131LBCH2:CHCl
Performance
 
Measuring Range
0.25 to 1 ppm
1 to 20 ppm
20 to 70 ppm
Number of Pump Strokes
4
2
1
Correction Factor
1/4
1
3.5
Sampling Time
1.5 minutes per pumpstroke
Detecting Limit
0.05 ppm (n=4)
Color Change
Yellow →Purple
Reaction Principle
CH2:CHCl + PbO2 +H2SO4 →HCl
HCl + Base → Purple
Coefficient ofVariation 10% (for1 to 5 ppm), 5% (for 5 to 20 ppm)
ShelfLife 2Years
Correctionsfor
temperature & humidity Temperature correction is necessary
Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow.