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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>157SA溴甲烷CH3Br气体检测管157SA METHYL BROMIDE 10-500ppm

溴甲烷CH3Br气体检测管157SA METHYL BROMIDE 10-500ppm

简要描述:

溴甲烷CH3Br气体检测管157SA METHYL BROMIDE 10-500ppm 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,是一种无色无味的液体。它具有强烈的熏蒸作用,能高效、广谱地杀灭各种有害生物。溴甲烷; 甲基溴; Bromomethane; Methylbromide; Monobromomethane; CAS:74-83-9

更新时间:2017-07-20

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溴甲烷CH3Br气体检测管157SA METHYL BROMIDE 10-500ppm

溴甲烷CH3Br气体检测管157SA METHYL BROMIDE 10-500ppm

1. PERFORMANCE
1) Measuring range :10-500ppm
Number of pump strokes 1(100ml)
2) Sampling time :2 minutes/1 pump stroke
3) Detectable limit :1 ppm
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→Reddish orange
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 red Orthoquinone
is produced.
CH3Br+I2O5+CrO3+H2SO4→Br2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
10
30
50
100
150
200
300
400
500
ppm
100ml
GAS To pump
(Brown) (White)
PRETREAT TUBE DETECTOR TUBE
Tube No.
157SA METHYL BROMIDE
Substance ppm Interference ppm Coexistence
Chlorine 1 Similar stain is produced. 1 Higher readings are given.
Bromine 1 〃1 〃
Nitrogen dioxide 1 〃1 〃
Dichloromethane 500 〃500 〃
Chloroform 50 〃50 〃
Ethylene dibromide 50 〃50 〃
Trichloroethylene 50 〃50 〃
Tetrachloroethylene 50 〃50 〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 5℃ 10℃ 15℃ 20℃ 30℃ 40℃
(ppm) (32°F) (41°F) (50°F) (59°F) (68°F) (86°F) (104°F)
500 - - - 620 500 430 390
400 - - 630 475 400 360 325
300 - 675 430 345 300 280 260
200 580 320 235 210 200 190 175
150 260 185 160 150 150 140 130
100 120 110 100 100 100 95 90
50 50 50 50 50 50 50 50

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