精品国产天线2019,色综合久久无码五十路人妻,亚洲熟悉妇女XXX妇女AV,亚洲H在线播放在线观看H

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>157SB溴代甲烷CH3Br氣體檢測(cè)管157SB METHYL BROMIDE 0.4-80ppm

溴代甲烷CH3Br氣體檢測(cè)管157SB METHYL BROMIDE 0.4-80ppm

簡(jiǎn)要描述:

溴代甲烷CH3Br氣體檢測(cè)管157SB METHYL BROMIDE 0.4-80ppm 溴甲烷CH3Br 英文名稱(chēng) bromomethane;methyl bromide 又稱(chēng)溴代甲烷或甲基溴,甲基溴,又稱(chēng)溴代甲烷或甲基溴,, 溴甲烷CH3Br 英文名稱(chēng) bromomethane;methyl bromide

更新時(shí)間:2025-03-11

在線(xiàn)留言
溴代甲烷CH3Br氣體檢測(cè)管157SB METHYL BROMIDE 0.4-80ppm

溴代甲烷CH3Br氣體檢測(cè)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+I(xiàn)2O5+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

国产69精品久久久久久人妻精品| 日韩精品一区二区三区四区蜜桃 | 国产成年无码久久久久毛片| 亚洲国产成人精品| 日韩欧美 a级| 国产超碰人人做人人爽AV| 精品国产乱码久久久久久蜜桃.| 无码人妻精品一区二区三区下载| 30分钟人性短片免费| 狼人无码精华av午夜精品| 亚洲18色成人网站WWW| 99亚洲精品自拍AV成人软件| 久久国产精品免费一区| 国产亚洲欧美在线精品电影| 亚洲熟妇色XXXXX欧美老妇Y| 中文字幕在线精品视频入口一区| 野花日本大全免费视频720| 年轻的朋友4免费观看韩剧| 国产免费午夜A无码V视频| 国产成人啪精品视频免费软件| 无码人妻久久一区二区三区免费丨 | 亚洲AV国产国产久青草| 人妻夜夜爽天天爽三区丁香花| 熟女少妇人妻中文字幕| 成熟的欧美精品SUV| 国产精品va最新国产精品视频| 樱桃视频影视在线观看免费| 狼群社区在线观看免费完整版 | 中日av乱码一区二区三区乱码| 18禁裸男晨勃露j毛免费观看 | 国产精品美女久久久网av| 人妻少妇精品无码专区二区| 新婚之夜玩弄人妻系列| 国产精品久久久久精品A级| 每晚都被他添的好多水免费视频| 欧美+日本+国产+在线观看| 精品少妇ay一区二区三区| 亚洲熟妇无码另类久久久| 免费影视观看网站入口| 国产精品免费视频| 亚洲日韩精品一区二区三区无码|