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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>> 190U丁烯醛C2H5OCH2CH2OH檢測管190U ETHYL CELLOSOLVE 5-500ppm

丁烯醛C2H5OCH2CH2OH檢測管190U ETHYL CELLOSOLVE 5-500ppm

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產品型號190U

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所  在  地上海市

更新時間:2024-12-18 19:51:43瀏覽次數:1083次

聯系我時,請告知來自 化工儀器網
丁烯醛C2H5OCH2CH2OH檢測管190U ETHYL CELLOSOLVE 乙二醇乙醚,乙二醇單乙醚,乙二醇-乙醚檢測管,丁烯醛C2H5OCH2CH2OH檢測管190U ETHYL CELLOSOLVE 5-500ppm,氣體檢測管法的應用特點:氣體檢測管法實際上是將化學分析方法儀器化,化學分析的繁瑣步驟已被生產檢測管的工業手段所取代,所以它具有化學分析和儀器分析的雙重優點。

丁烯醛C2H5OCH2CH2OH檢測管190U ETHYL CELLOSOLVE 5-500ppm

Tube 90U
1. PERFORMANCE
1) Measuring range :5-500 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
HOCH2CH2OCH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
5
20
50
100
150
200
300
400
500
ppm
300ml
GAS To pump
DEHUMIDIFIER
(White)
190U METHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Ethers 〃〃
Paraffin (morefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.1 〃〃
0
400
500
200
300
Trichloroethane〔ppm〕?
FIG.1 Influence of Trichloroethane
Methyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
100
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F)
500 800 620 500 410 335 265
400 620 490 400 325 260 200
300 450 365 300 245 195 145
200 290 245 200 160 125 95
150 215 185 150 120 90 70
100 145 125 100 80 60 45
50 75 65 50 40 30 25
20 30 25 20 15 12 10
5 10 7 5 4 3 2
(NOTE)
This tube scale is calibrated based on Ethyl cellosolve and the same scale is available for Methyl cellosolve.

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