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  • 产品名称：乙酸检测管145 Propyl acetate

  • 产品型号：145
  • 产品厂商：日本GASTEC
  • 产品文档：
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简单介绍：
乙酸检测管145 Propyl acetate，Measuring Range 20 to 500 ppm，是一种半定量方法，但误差较大、干扰因素多，试纸本身易失效。目前常用的有检测氨气、有机磷农药、一氧化碳、光气、氢氰酸、硫化氢、甲醛、乙醛、二氧化氮、次氯酸、过氧化氢等的试纸。检气管法 具有简便、快速、直读等特点
详情介绍：

 

乙酸检测管145 Propyl acetate

Propyl acetate         No.145

CH3CO2CH2CH2CH3(CH3CO2C3H7)

乙酸检测管145 Propyl acetate

Performance
 

Measuring Range

20 to 500 ppm

Number of Pump Strokes

2

Correction Factor

1

Sampling Time

4 minutes per pumpstroke

Detecting Limit

4 ppm (n=2)

Color Change

Yellow → Blackishbrown → Pale blue after few minutes

Reaction Principle

CH3CO2CH2CH2CH3 + Cr6+ + H2SO4 → Cr3+

Coefficient ofVariation

15% (for 20 to 100ppm), 10% (for 100 to 500 ppm)

ShelfLife2 Years
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

Alcohols

-

Plus error

Produce blackishbrown
then turns to pale blue

Ketones

-

Plus error

Produce blackishbrown
then turns to pale blue

Esters

-

Plus error

Produce blackishbrown
then turns to pale blue


Othersubstance measurable with this detector tube


 
Calibration gasgenerationDiffusion tube method


 


TLV-TWATLV-STELExplosive range
200ppm250ppm1.7to 8%
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