Gastec 230H 甲基碘检测管CH3I(100~34800 ppm)

Indicator: 100 to 6000 ppm 
Measuring Range: 
+ 100 to 6000 ppm , Number of Pump Strokes 2
+ 6000 to 15000 ppm, Number of Pump Strokes 1
+ 15000 to 34800 ppm , Number of Pump Strokes 1/2
Sampling Time: 1. 5 minute per pump stroke
Colour Change: White →Dark brown
Reaction Principle: CH3I + I2O5 → I2
Coefficient of Variation: 5% (for 100 to 6000ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range 100 to 6000 ppm 6000 to 15000 ppm 15000 to 34800 ppm
Number of Pump Strokes 2 1 1/2
Correction Factor 1 2.5 5.8
Sampling Time 1.5 minutes per pump stroke
Detecting Limit 5ppm (n=2)
Colour Change White →Dark brown
Reaction Principle CH3I + I2O5 → I2
Coefficient of Variation 5% (for 100 to 6000ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Carbon monoxide 20ppm + Pale brown (pale green at the end of staining)
Carbon dioxide   No No
Ethylene   + Pale yellow
Hexane   + Pale orange
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
2 ppm - -
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