Gastec 135 快速1,1,1-三氯乙烷测量探测管CH3CCl3(100~2000 ppm)

Indicator: 100 to 500 ppm
Measuring Range: 
+ 100 to 500 ppm, Number of Pump Strokes 1
+ 500 to 2000 ppm, Number of Pump Strokes 1/2
Sampling Time: 3 minute per pump stroke
Colour Change: White → Reddish orange
Coefficient of Variation: 10% (for 100 to 200 ppm), 5% (for 200 to 500 ppm)
Nr. of tests: 5
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
100 to 500 ppm 500 to 2000 ppm
Number of Pump Strokes
1 1/2
Correction Factor
1 4
Sampling Time 3 minutes per pump stroke
Detecting Limit 50 ppm (n=1)
Colour Change White → Reddish orange
Reaction Principle 1,1,1-Trichloroethane reacts with oxidizing agent to produce intermediate products then it react with detecting agent to produce reddish orange stain.
Coefficient of Variation 10% (for 100 to 200 ppm), 5% (for 200 to 500 ppm)
Shelf Life 3 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
Chlorine, Bromine, Iodine   + Reddish orange
Chloroform, Dichloromethane   + Reddish orange
Carbon tetrachroride   No No
Methyl bromide   + Reddish orange
Trichloroethylene, Tetrachloroethylene   + Reddish orange
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Chlorobromomethane Factor: 0.22 1 22 to 110 ppm
1,1-Dichloroethane Factor: 0.9 1 90 to 4500 ppm
1,2-Dichloroethane Factor: 4.0 1 400 to 2000 ppm
1,1,2-Trichloroethane Tube 135 Reading (n=2) 100 200 300 400 500
1,1,2-Trichloroethane (ppm) 220 350 480 610 750
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
350 ppm 450 ppm -
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