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Methyl cellosolve acetate CH3CO2CH2CH2OCH3 190U ETHYL CELLOSOLVE (+) 3-120ppm 乙二醇-甲醚乙酸檢測管,醋酸甲氧乙酯,乙酸甲賽璐蘇;乙酸2-甲氧乙酯,檢測管在世界上一些發(fā)達的工業(yè)國家使用的相當普遍,從品種和數(shù)量上規(guī)模都很大,并且有許多有影響的專業(yè)生產(chǎn)廠。在環(huán)境保護組織和勞動安全行業(yè)已經(jīng)制訂了檢測管使用的相應(yīng)法律法規(guī)措施,氣體檢測管成為一種*的環(huán)境監(jiān)測的安全工具。www.yd666.com,有毒氣體應(yīng)急監(jiān)測箱
更新時間:2024-12-19
在線留言醋酸甲氧乙酯氣體檢測管Methyl cellosolve acetate 3-120ppm
Tube 90U
0
30
40
50
20
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500
(300ml)? (100ml)?
0
300
400
500
200
100
1,1,1-Trichloroethane〔ppm〕?
FIG.2 Influence of 1,1,1-Trichloroethane
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
(300mR)?
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 :10~35℃
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.
C2H5OCH2CH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
500
200
150
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
????
190U ETHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Ethers 〃〃
(Pmaroarfefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.2 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (80°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
上一篇:190U甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE 5-500ppm
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