免费无码成人AV电影在线播放,精品露脸国产偷人在视频,国产成人免费视频,少妇高潮a片无套内谢麻豆传

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>227S乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

簡要描述:

氣體檢測管一氧化碳檢測管,苯檢測管,甲苯檢測管,二甲苯檢測管,氮氧化物檢測管,二氧化硫檢測管,二氧化碳檢測管,氧氣檢測管,氫氣檢測管,氟化氫檢測管,甲醇檢測管,乙醇檢測管,丙酮檢測管,丁酮檢測管,氯苯檢測管,氯乙稀檢測管,三氯乙稀,乙胺檢測管(C2H5NH2)乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

更新時間:2025-01-15

在線留言
乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

乙基胺C2H5NH2氣體檢測管227S Ethyl amine 1-20ppm

Tube No.227S
1. PERFORMANCE
1) Measuring range :1-20 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.2 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :Pale purple→Pale yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with Phosphoric acid, Ph indicator is discoloured.
CH3CH2NH2+H3PO4→(CH3NH3)2HPO4
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
20
18
16
14
12
10
8 6 4 2 1
100ml
ppm
DEHUMIDIFIER
(White)

227S ETHYL AMINE
Substance Interference Coexistence
Ammonia Similar stain is produced. Higher reading are given.
Other amines 〃〃
(NOTE)
This tube scale is calibrated based on Methyl amine and the same scale is available for Ethyl amine.

欧美性xxxxx极品老少| 少妇性按摩无码中文a片| 亚洲av一区二区无码波多野结衣| 免费久久人人爽人人爽av| 国产真实乱人偷精品视频免费| 免费成人在线视频| 野花香高清在线观看视频播放免费| 偷玩朋友熟睡人妻| 99精品国产综合久久久久五月天| 日本不卡一区二区三区| 国产农村妇女毛片精品久久 | 无码国产伦一区二区三区视频| 无码高潮少妇毛多水多水免费 | 国产丰满老熟女重口对白| 国产精品久久久久久福利| 莫妮卡欧美R级无删版影片| 色噜噜狠狠一区二区三区果冻| 2023极品少妇xxxo露脸| 久久天天躁狠狠躁夜夜avapp| 又粗又黄又爽视频免费看| 男人扒开添女人下部免费视频| 国产一区二区三区精品视频| 不戴套干已婚少妇| 国产免费无码一区二区视频 | 午夜天堂精品久久久久 | 亚洲欧美日韩高清一区| 后入内射国产一区二区| 日韩乱码人妻无码系列中文字幕| 凹凸在线无码免费视频| 精精国产xxxx视频在线| 成在人线av无码免费| 香蕉欧美成人精品A∨在线观看| 日本做受高潮好舒服视频| 综合 欧美 亚洲日本| 极品少妇xxxx精品少妇偷拍| 99久久人人爽亚洲精品美女| 亚洲av日韩av永久无码久久 | 国产精品久久久久久爽爽爽床戏| 曰本性l交片免费看| 久久精品日韩AV无码| 中文字幕乱码亚洲∧v日本1|