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代理商厂商性质
上海市所在地
乙酸正丙酯气体检知管151U PROPYL ACETATE 20-1000ppm
Tube 51U
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")
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :Pale yellow→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CO2(CH2)2CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
1000
800
600
400
200
100
50
20
ppm
GAS To pump
151U PROPYL ACETATE
Substance Interference Coexistence
Alcohols Sarime iplaror dsutaciends. or Blue stains Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aromatic hydrocarbons 〃〃
Paraffin hydrocarbons 〃Whole reagent is changed to
Brown.
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
1,000 - 1,000 480 320
800 - 800 420 280
600 1,450 600 340 240
400 850 400 240 160
200 380 200 120 80
100 200 100 60 40
50 100 50 30 20
20 45 20 10 6