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乙酸正丙酯氣體檢知管151U PROPYL ACETATE 20-1000ppm,(1)對大多存在可燃性易爆氣體、有毒氣體及窒息性氣體,放射性物質(zhì)的放射性都可定量測量①操作簡便:將檢測管插在手動氣泵上抽(100ml)定量氣體即可。 ②分析速度快:一般僅需幾十秒至幾分鐘即可得知結(jié)果,其分析速度是任何化學(xué)分析和儀器方法不能比擬的。③測量精度高:該方法準(zhǔn)確度誤差一般有效量程為7%~15%,④適應(yīng)性好:每種檢測管都有1種到幾種不等的大小范圍的選擇。⑤使用安全:使用時手動操作,無需要電源、熱源,在有易燃易
更新時間:2024-11-20
在線留言乙酸正丙酯氣體檢知管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
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