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>157SB溴代甲烷CH3Br气体检测管157SB METHYL BROMIDE 0.4-80ppm

溴代甲烷CH3Br气体检测管157SB METHYL BROMIDE 0.4-80ppm

简要描述:

溴代甲烷CH3Br气体检测管157SB METHYL BROMIDE 0.4-80ppm 溴甲烷CH3Br 英文名称 bromomethane;methyl bromide 又称溴代甲烷或甲基溴,甲基溴,又称溴代甲烷或甲基溴,, 溴甲烷CH3Br 英文名称 bromomethane;methyl bromide

更新时间:2018-03-27

发邮件给我们:554328895@qq.com

分享到: 1
在线留言
溴代甲烷CH3Br气体检测管157SB METHYL BROMIDE 0.4-80ppm

溴代甲烷CH3Br气体检测管157SB METHYL BROMIDE 0.4-80ppm

1. PERFORMANCE
1) Measuring range :5-80 ppm 2.5-40 ppm 0.9-7.3 ppm
Number of pump strokes 1(100ml) 2(200ml) 4(400ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :1 ppm(200ml)
4) Shelf life :3 years(Necessary to store in a refrigerated place ; 0~10℃)
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Bromine is produced. Bromine reacts with o-Toluidine and yellow
Orthoquinone is produced.
CH3Br+I2O5+CrO3+H2SO4→Br2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
5
10
15
20
30
40
60
80
ppm
100ml
GAS To pump
(Olive) (White)
PRETREAT TUBE DETECTOR TUBE
Tube No.
157SB METHYL BROMIDE
(NOTE)
When the concentration is below 5 ppm, 2 pump strokes can be used to determine the lower concentration.
Following formula is available for the actual concentration.
Actual concentration=1/2×Temperature corrected value
Substance Interference ppm Coexistence
Halogen Similar stain is produced. Higher readings are given.
Halogenated hydrocarbons 〃〃
Hexane FIG.1 200 Lower readings are given.
0
50
60
70
80
30
40
Hexane〔ppm〕�
FIG.1 Influence of Hexane Methyl bromide indicating value 〔
ppm〕
100 200 300 400 500 600 700
20
10
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 5℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (41°F) (50°F) (68°F) (86°F) (104°F)
80 - 140 98 80 75 73
60 145 76 67 60 57 56
40 44 43 42 40 40 40
30 30 30 30 30 30 30

联系人
在线客服
扫一扫
用心服务 成就你我