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(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>211U丙烯酸乙酯CH2=CHCO2C2H5氣體檢測(cè)管211U ETHYL ACRYLATE 5-60ppm

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測(cè)管211U ETHYL ACRYLATE 5-60ppm

簡(jiǎn)要描述:

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測(cè)管211U ETHYL ACRYLATE 5-60ppm (+) 檢測(cè)劑是將某些能與待測(cè)物質(zhì)發(fā)生化學(xué)反應(yīng)并可改變顏色的化學(xué)試劑吸附在固體載體顆粒表面上加工而得,如硫化氫檢測(cè)管,其反應(yīng)原理如下∶H2S+Pb(AC)2 PbS↓+2HAC

更新時(shí)間:2025-01-15

在線留言
丙烯酸乙酯CH2=CHCO2C2H5氣體檢測(cè)管211U ETHYL ACRYLATE 5-60ppm

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測(cè)管211U ETHYL ACRYLATE 5-60ppm

Tube No.211U
1. PERFORMANCE
1) Measuring range :5-60 ppm
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :0.5 ppm
4) Shelf life : :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Methyl acrylate at 2 pump strokes
and Ethyl acrylate concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH2=CHCO2CH2CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
60
40
20
10
5
ppm
200ml
DEHUMIDIFIER
(White)
??????????
????
211U C ETHYL ACRYLATE
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 80 70 60 52 44
40 52 46 40 34 28
20 27 23 20 17 15
10 14 12 10 9 7
5 7 6 5 4 3
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher reading are given.
Paraffin (morefi nth haynd Cro3c)arbons DWahrokl e b rreoawgne.nt is discoloured to 〃
Halogenated hydrocarbons 〃〃
Esters 〃〃
Aromatic hydrocarbons FIG.1,2 〃〃
0
20
30
10
50
60
40
80
100
90
70
Toluene〔ppm〕?
FIG.1 Influence of Toluene
Ethyl acrylate
indicating value 〔ppm〕
10 20 30 40 50 0
20
30
10
50
60
40
80
100
90
70
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Ethyl acrylate
indicating value 〔ppm〕
100200300400500600700
Ethyl Acrylate(ppm)?
No.211U Tube reading(ppm)?
(200mR)?
5
10
20
40
60
5
10
20
40
60

肉丝祙少妇VR做爰视频| 精品人妻无码一区二区色欲产成人| 亚洲综合色丁香婷婷六月图片| 成人性爱视频在线观看| jzzijzzij亚洲乱熟无码| 久久久精品国产sm调教网站| 大帝av在线一区二区三区| 久久人人爽人人爽人人片DVD| 欧美亚洲国产精品久久高清| 狠狠躁18三区二区一区| 诱人的妺妺2中文在线观看| 少妇AV射精精品蜜桃专区| 放荡人妇人妻出轨系列| 熟女人妻大叫粗大受不了| 一二三四免费观看在线视频中文版| 3d动漫精品啪啪一区二区免费| 久久精品国产精品国产精品污| 人妻被黑人猛烈进入a片| 日韩人妻一区二区三区免费| 欧美一区二区三区激情| 又粗又硬又大又爽免费视频播放 | 99在线精品免费视频九九视| 国产尤物AV尤物在线观看| 欧美又粗又大又硬又长又爽视频| 国产成人精品综合久久久久性色| 精品亚洲一区二区三区在线观看 | 动漫AV纯肉无码AV在线播放| 最近免费中文字幕大全高清mv| 国产三级在线观看播放| 久久99国产精品久久99| 无码h黄肉3d动漫在线观看| 哔哩哔哩免费观看在线视频| 免费AV网站| 野花免费视频完整版在线播放| 国产无遮挡吃奶视频网站| 色婷婷综合久久久久中文| 欧洲无码精品A码无人区| 亚洲色无码a片一区二区情欲| 久久亚洲AV成人无码国产| babescom欧美熟妇| 国内精品久久久人妻中文字幕|