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上海境宣實業有限公司
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當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 232SA乙二醇HOCH2CH2OH氣體檢測管232SA ETHYLENE GLYCOL20-250mg/m3

乙二醇HOCH2CH2OH氣體檢測管232SA ETHYLENE GLYCOL20-250mg/m3

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產品型號232SA

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所  在  地上海市

更新時間:2024-12-18 20:10:18瀏覽次數:1276次

聯系我時,請告知來自 化工儀器網
乙二醇HOCH2CH2OH氣體檢測管232SA ETHYLENE GLYCOL 20-250mg/m3,反應可分為兩種,一種是被檢測氣體與檢測試劑直接發生反應,產生變色。另一種是將被測氣體轉變為其他氣體,轉變后的氣體再與檢測試劑反應,產生變色。

乙二醇HOCH2CH2OH氣體檢測管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

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