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二乙苯氣體檢測管111U ETHYL ACETATE (+) 乙酸乙酯 二乙基苯 C6H4(C2H5)2 Diethyl benzene 10-180ppm 總代理銷售日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管,提供日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管介紹,日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管應(yīng)用,日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管價格,日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管說明書,日本光明理化學(xué)工業(yè)株式會社北川式氣體檢測管售后服務(wù),日本光明理化學(xué)工業(yè)株式會社北川式氣體
更新時間:2024-12-18
在線留言二乙苯氣體檢測管111U Diethyl benzene 10-180ppm
Tube 11U
1. PERFORMANCE
1) Measuring range :20-1,000 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :10 ppm
4) Shelf life : :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Yellow→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CO2C2H5+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1000
800
600
400
200
100
50
20
111U ETHYL ACETATE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃ 40℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F) (104°F)
1,000 1,330 1,200 1,000 830 700 600 500
800 1,080 950 800 670 550 470 400
600 830 720 600 500 420 380 300
400 570 480 400 330 280 240 200
200 280 240 200 170 140 120 100
100 150 120 100 80 70 60 50
50 70 60 50 40 30 20 10
20 30 25 20 15 10 7 4
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher reading are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Whole reagent is discoloured to It the top of brown stain is clear,
Paraffin hydrocarbons Pale brown. athffee catcecdu.racy of readings is not
Halogenated hydrocarbons FIG.1 〃〃
0
200
400
600
800
1000
Trichloroethylene〔ppm〕?
FIG.1 Influence of Trichloroethylene
Ethyl acetate indicating value 〔ppm〕
100 200 300
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