Gastec 137LA 快速氯仿检测管CHCl3(0.5~30ppm)

Indicator: 2 to 12 ppm
Measuring Range: 
+ 0.5 to 2 ppm, Number of Pump Strokes 4
+ 2 to 12 ppm, Number of Pump Strokes 2
+ 12 to 30 ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: White → Pale purple
Reaction Principle: CHCl3 + I2O5 + H2S2O7 → Cl2, Cl2 + (CH3C10H5NH2)2→ Pale purple products
Coefficient of Variation: 10% (for 2 to 4 ppm), 5% (for 4 to 12 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
0.5 to 2 ppm 2 to 12 ppm 12 to 30 ppm
Number of Pump Strokes
4 2 1
Correction Factor
0.25 1 2.5
Sampling Time 2 minutes per pump stroke
Detecting Limit 0.2 ppm (n=4)
Colour Change White → Pale purple
Reaction Principle CHCl3 + I2O5 + H2S2O7 → Cl2
Cl2 + (CH3C10H5NH2)2→ Pale purple products
Coefficient of Variation 10% (for 2 to 4 ppm), 5% (for 4 to 12 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
Chlorine   No No
Bromine   No No
Iodine   No No
Unsaturated halogenated HCs   + Pale purple
Saturated halogenated HCs   + Pale purple
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
10 ppm - -
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