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.

强被迫伦姧惨叫在线视频| 免费120秒体验试看5次| 夜鲁鲁鲁夜夜综合视频欧美| 激情欧美日韩一区二区| 玩两个丰满老熟女久久网 | 日日碰狠狠躁久久躁9| 久久亚洲av永久无码精品| 东京无码熟妇人妻av在线网址| 17岁日本高清免费观看完整版| 人妻少妇被粗大爽9797pw| 高清freexxxx性国产| 四虎国产成人永久精品免费| 欧美人与动性XXXXX杂| 专干老熟女视频在线观看| 精品亚洲av在线无码播放| 精品国产av无码一区二区三区| 精品伊人久久大香线蕉| 少妇性l交大片| 无遮挡国产高潮视频免费观看| 国产精品久久毛片a片| xxxx漂亮少妇xxxxhd| 国产午夜精品一区二区三区极品 | 浴室情欲2韩国中文字幕| 国产又色又爽又黄的免费软件| 日韩精品无码一区二区三区免费| 亚洲熟女少妇一区二区| 一本一本久久a久久精品综合麻豆| 成人毛片100免费观看| 免费直播在线直播观看| 日本成本人片无码免费视频网站| 西西最大胆日本无码视频| 人人妻人人爽日日人人| 亚洲av无码国产精品久久不卡| 亚洲国产精品一区二区九九| 欧美熟妇另类久久久久久多毛| 日本韩国三级观看| 久久久久99精品成人片欧美| 私密浏览器看片免费下载视频| 亚洲线精品一区二区三区| 久久久久久av无码免费网站下载| 中文字幕乱码亚洲无线码|