产品列表PRODUCTS LIST

首页>产品中心>日本光明北川式气体检测管>气体快速检测管>111U正壬烷CH3(CH2)7CH3气体检测管111U n-Nonane 5-160ppm

正壬烷CH3(CH2)7CH3气体检测管111U n-Nonane 5-160ppm

简要描述:

正壬烷CH3(CH2)7CH3气体检测管111U n-Nonane 5-160ppm,气体检测管是利用填充在玻璃管中的检测剂与被测气体发生化学反应而发生颜色变化,通过观察变色层的长度,得到被测气体的浓度。在一定直径的玻璃管内紧密地装填检测剂,将两端烧封,然后在玻璃管表面印制表示浓度的刻度,就制成了一支检测管。检测剂通过在硅胶或氧化铝等物质表面附着显色试剂的方法所制成的。显色试剂遇到被测气体时,会发生特定反应,产生变色,这种检测试剂具有相当的稳定性。

更新时间:2017-11-25

发邮件给我们:554328895@qq.com

分享到: 1
在线留言
正壬烷CH3(CH2)7CH3气体检测管111U n-Nonane 5-160ppm

正壬烷CH3(CH2)7CH3气体检测管111U n-Nonane 5-160ppm

Tube No.111U

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

联系人
在线客服
用心服务 成就你我