Gastec 163LL 环氧乙烷/C2H4O; 有机气体检测管C2H4O(0.1~10ppm)

Indicator: 0.1 to 5 ppm
Measuring Range: 
+ 0.1 to 5 ppm, Number of Pump Strokes 4
+ 5 to 10 ppm, Number of Pump Strokes 2
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Pale orange
Reaction Principle: 
+ C2H4O → 2HCHO
+ 3HCHO + (NH2OH)3H3PO4 → H3PO4
+ H3PO4 + Base → Phosphate
Coefficient of Variation: 15% (for 0.1 to 1 ppm), 10% (for 1 to 5 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.1 to 5 ppm 5 to 10 ppm
Number of Pump Strokes
4 2
Correction Factor
1 2
Sampling Time 2 minutes per pump stroke
Detecting Limit 0.05 ppm (n=4)
Colour Change Yellow → Pale orange
Reaction Principle C2H4O → 2HCHO
3HCHO + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate
Coefficient of Variation 15% (for 0.1 to 1 ppm), 10% (for 1 to 5 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
Acetaldehyde 1.5ppm + Pale orange
Formaldehyde 0.5ppm + Pale orange
Ketones 15ppm + Pale orange
Alcohols 300ppm No
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
1 ppm(2014) - 3.0 to 100%
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