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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>232SA乙二醇HOCH2CH2OH气体检测管232SA ETHYLENE GLYCOL20-250mg/m3

乙二醇HOCH2CH2OH气体检测管232SA ETHYLENE GLYCOL20-250mg/m3

简要描述:

乙二醇HOCH2CH2OH气体检测管232SA ETHYLENE GLYCOL 20-250mg/m3,反应可分为两种,一种是被检测气体与检测试剂直接发生反应,产生变色。另一种是将被测气体转变为其他气体,转变后的气体再与检测试剂反应,产生变色。

更新时间:2024-02-19

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乙二醇HOCH2CH2OH气体检测管232SA ETHYLENE GLYCOL20-250mg/m3

乙二醇HOCH2CH2OH气体检测管232SA ETHYLENE GLYCOL20-250mg/m3

Tube No.232SA

1. PERFORMANCE
1) Measuring range :20-250mg/m3
Number of pump strokes :2(200ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :5mg/m3
4) Shelf life :2 years
5) Operating temperature :20~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Formic acid is produced and PH indicator is discoloured.
HOCH2CH2OH+HIO4→2HCHO+HIO3+H2O
HCHO+HIO4+H2SO4→HCOOH+HIO3
HCOOH+NaOH→Na(HCOO)+H2O
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
DETECTOR TUBE
(White)
PRETREAT TUBE
250
200ml
mg/m3
50
20
200
150
100
232SA ETHYLENE GLYCOL
Substance Interference Coexistence
Aldehydes Similar stain is produced. Higher readings are given.
Sulphur dioxide 〃〃
Ethylene oxide 〃〃
Hydrogen sulphide Orange/ Pink stain is produced. Accurate measurement can not
be done.
TEMPERATURE CORRECTION TABLE
Scale True Concentration (mg/m3)
Readings 20℃ 22℃ 25℃ 30℃ 40℃
(mg/m3) (68°F) (71.6°F) (77°F) (86°F) (104°F)
250 - 370 250 200 155
200 - 260 200 165 130
150 270 170 150 125 105
100 120 110 100 85 75
50 60 55 50 45 40
30 23 20 20 18 15