久久精品国产亚洲AV麻豆蜜芽,风流少妇A片一区二区蜜桃,国产精品久久久久精品三级卜 ,性欧美大战久久久久久久久

產(chǎn)品列表PRODUCTS LIST

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

溴代甲烷CH3Br氣體檢測管157SB METHYL BROMIDE 0.4-80ppm

簡要描述:

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

更新時(shí)間:2025-03-11

在線留言
溴代甲烷CH3Br氣體檢測管157SB METHYL BROMIDE 0.4-80ppm

溴代甲烷CH3Br氣體檢測管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

poronovideos极度另类| 无人区AV在线观看| 久久亚洲精品无码AV网| A级毛片高清免费视频在线播放| 黑人巨大VIDEOS极度另类| 久久久久精品久久久久影院蜜桃| 蜜桃臀无码内射一区二区三区| 狠狠狠色丁香婷婷综合久久AV| 欧美性猛交XXXX黑人| 男人的天堂AV| 9999久久久久精品无码| 丝袜老师张开腿任我玩弄| 蜜臀AV免费一区二区三区| 人妻AⅤ无码一区二区三区| 女人下面突然一紧一紧的| 少妇BBW擦BBBB撩BBBB| 99国产精品无码| 欧美人与动性XXXXBBBB| 国产性色AV高清在线观看| 娇妻互换经典小说| 国产又黄又爽又湿的免费网站 | 韩国年轻漂亮岳每4乱理| 无人区电影高清完整版 | 久久久噜噜噜久久中文字幕色伊伊 | 国内精品A片XXX久久久| 福利一区二区三区视频在线观看| 久久精品无码一区二区三区免费| 99久久精品国产| いっぱいしぼっちゃうぞ在线| 亚洲国产精品无码久久青草 | 粗长道具进菊羞耻调教| 办公室艳妇潮喷费蜜桃AV| 囯产精品久久久久久久久蜜桃| 噜噜噜精品欧美成人AV| 国产黄A三级三级三级看三级| 国产成人啪精品视频免费软件| 精品国产乱码久久久久久| 久久久久久久精品成人热色戒| 人人爽人人爽人人片AV免费| 天天做天天爱天天爽综合网| 免费看男男GAY啪啪网站|