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主页 有毒有害气体快速检测管（用泵） Gastec 163L 快速乙烯氧化物检测管C2H4O（0.4~350 ppm）

Gastec 163L 快速乙烯氧化物检测管C2H4O（0.4~350 ppm）

Indicator: 1 to 100 ppm
Measuring Range: 
+ 0.4 to 1 ppm, Number of Pump Strokes 4
+ 1 to 100 ppm, Number of Pump Strokes 2
+ 100 to 350 ppm, Number of Pump Strokes 1
Sampling Time: 3 minute per pump stroke
Colour Change: Yellow → Reddish brown
Reaction Principle: 15% (for 1 to 20 ppm), 10% (for 20 to 100 ppm)
+ C2H4O → 2HCHO, 
+ 3HCHO + (NH2OH)3H3PO4 → H3PO4, 
+ H3PO4 + Base → Phosphate
Coefficient of Variation: 
Nr. of tests: 5
Pump: GV-100S/110S

Details

Catalog

Manual

manual tube

Performance
Measuring Range
0.4 to 1 ppm 1 to 100 ppm 100 to 350 ppm
Number of Pump Strokes
4 2 1
Correction Factor
0.4 1 3.5
Sampling Time 3 minutes per pump stroke
Detecting Limit 0.1 ppm (n=4)
Colour Change Yellow → Reddish brown
Reaction Principle C2H4O → 2HCHO
3HCHO + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate
Coefficient of Variation 15% (for 1 to 20 ppm), 10% (for 20 to 100 ppm)
Shelf Life 1 Year
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Aldehydes, Ketones   + Reddish brown
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Epichlorohydrin 1.2 2 1.2 to 120 ppm
Propylene oxide 1.0 1 1 to 100 ppm
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
1 ppm(2014) - 3.0 to 100%

 

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