亚洲熟妇少妇任你躁在线观看,把极品白丝老师啪到腿软,性按摩XXXX在线观看,律师事务所在线咨询免费

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>213S三乙胺(C2H5)3N氣體檢測管213S TRIETHYL AMINE 1-20ppm

三乙胺(C2H5)3N氣體檢測管213S TRIETHYL AMINE 1-20ppm

簡要描述:

三乙胺(C2H5)3N氣體檢測管213S TRIETHYL AMINE 1-20ppm,英文名稱 triethylamine(TEA);N,N-二乙基乙胺,別名 N,N-二乙基乙胺,健康危害:對呼吸道有強(qiáng)烈的刺激性,吸入后可引起肺水腫甚至死亡。口服腐蝕口腔、食道及胃。眼及皮膚接觸可引起化學(xué)性灼傷。

更新時間:2024-11-13

在線留言
三乙胺(C2H5)3N氣體檢測管213S TRIETHYL AMINE 1-20ppm

三乙胺(C2H5)3N氣體檢測管213S TRIETHYL AMINE 1-20ppm

Tube No.213S
1. PERFORMANCE
1) Measuring range :2-20 ppm 1-10 ppm
Number of pump strokes 1/2(50ml) 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.:5% RSD-high:5%
3. CHEMICAL REACTION
By reacting with phosphoric acid, PH indicator is discoloured.
2(C2H5)3N+H3PO4→〔(C2H5)3NH〕2HPO4
4. CALIBRATION OF THE TUBE
VAPOUR PRESSURE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
6
4
2 1
DEHUMIDIFIER
(White)
10
8
100ml
ppm
213S TRIETHYL AMINE
(NOTE)
In case of 1 / 2 pump strokes, following formula is available for the actual concentration.
Actual concentration=2×Reading value.
Substance Interference Coexistence
Ammonia Similar stains are produced and Higher readings are given.
higher readings are given.
Other amines 〃〃

天堂8在线天堂资源bt| 极品粉嫩小泬白浆20pa片| 12孩岁女a处破娇小| 老熟妇色xxxx老妇多毛| 亚洲综合欧美色五月俺也去| 女子初尝黑人巨嗷嗷叫| 久热中文字幕无码视频| 久久精品一区二区三区四区| 国产激情久久久久久熟女老人| 艳妇500篇短篇H系列| 狂性xxxx乱大交老女人| 吃了他达拉非太硬还需要继续吃吗| 亚洲综合无码无在线观看| 末成年女A片一区二区| 国产免费亂倫在线观看| 性一交一乱一色一视频| 日本熟妇浓毛hdsex| 女人夜夜春高潮爽A∨片| 色综合99久久久无码国产精品 | 久久人人爽爽人人爽人人片av | ass大胆孕妇分娩pics| 久久精品国产丝袜人妻| 久久青青草原亚洲AV无码APP| 男女一边摸一边做爽爽的免费视频 | 欧美videosdesexo| 日韩人妻一区二区三区免费| A级毛片在线观看| 色欧美片视频在线观看| av精品一区二区三区| 免费理论电线| 国精产品w灬源码16| 无码无套少妇毛多18p| 亚洲欧美乱综合图片区小说区| 亚洲AV永久无码一区二区三区| 国产一精品一av一免费爽爽| 成人国内精品久久久久一区| 啊┅┅快┅┅用力啊岳| 无码高潮爽到爆的喷水视频APP| 艳妇乳肉豪妇荡乳av无码福利| 他的舌头探进蜜源毛毛虫说说| 婷婷久久无码欧美人妻|