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  • 产品名称:二氯甲烷检知管138L Methylene chloride

  • 产品型号:138L
  • 产品厂商:日本GASTEC
  • 产品文档:
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简单介绍:
二氯甲烷检知管138L Methylene chloride,二氯甲烷检知管138LCH2Cl2 Methylene chloride,Measuring Range 10 to 60 ppm 60 to 150 ppm气体检测管有一氧化碳、硫化氢、氨、甲醛、苯 、苯系物中苯 、甲苯 、二甲苯 、二氧化硫、氮氧化物、汽油 、液化石油汽 、氯气 、氯化氢、二氧化碳、磷化氢、二硫化碳、臭氧 、氟化氢
详情介绍:

 

二氯甲烷检知管138L Methylene chloride
Methylene chloride  No.138L

CH2Cl2

二氯甲烷检知管138L Methylene chloride

Performance
 

MeasuringRange

10 to 60 ppm

60 to 150 ppm

Number of PumpStroke

2

1

CorrectionFactor

1

2.5

Sampling Time

3 minutes per pumpstroke

Detecting Limit

5 ppm (n=2)

Color Change

White → PalePink

Reaction Principle

CH2:Cl2 + CrO3 + H2S2O7 → Cl2
Cl2+ 3,3,5,5-Tetramethylbenzidine →Holoquinone

Coefficient ofVariation15% (for10 to 20 ppm), 10% (for 20 to 60 ppm)
ShelfLife2Years
Correctionsfor
temperature & humidity
Temperature correction is necessary
Store the tubes at cool and darkplace.

Possible coexisting substances and theirinterferences(NOTE)


Substance

Concentration

Interference

Change color by itself

Cl2, Br2, I2

-

Plus error

Discolors palepink

Unsaturatedhalogenated HCs

6 ppm

Plus error

Discolors palepink

Saturatedhalogenated HCs

3 ppm

Plus error

Discolors palepink



Othersubstance measurable with this detector tube


 
Calibration gasgenerationDiffusion tubemethod


 


TLV-TWATLV-STELExplosive range
50ppm-15.5 to 66.9%
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