亚洲中文字幕啪啪一区二区,看亚洲欧洲在线视频,国产福利不卡在线视频,欧美日韩一区二区人妻

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:2025-01-08

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線(xiàn)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

91精品一区二区三区蜜臀| 日本一区二区三区人妻视频| 亚洲国产日韩一区精品| 亚洲国产精品国揄产拍| 欧美一级黄片在线播放| 99亚洲视频一区二区| 一区二区久久久久久久久| 日韩精品一区二区三区四区| 国产精品一区二区久久| 欧美一区二区三区啪啪| 日本一区二区三区免费的视频| 国产av剧情妙龄美女| av网址在线播放大全| 亚洲人妻御姐中文字幕| 精品人妻一区二区三区20| 日本欧美一区二区免费不卡| 中文字幕久久中文字幕综合网| 日韩欧美中文字幕一区二区| 五月婷婷六月丁香免费视频| 经典国产乱子伦精品| 黄色网色网色网色网色网站| 91久久久久久波多野高潮| 人人公开免费看操视频| 亚洲精品成人18久久| 国产一区二区三区欧美日| 国产日韩欧美久久综合网| 97精品国产综合久久| 韩国午夜理伦三级理论电影| 中文字幕人妻乱一区二区三区| 一区二区三区欧美日韩| 日韩一区二区三区久久久| 国产精品综合色国产亚洲欧| 日韩一区二区三区射精合集| 亚洲午夜久久久久噜噜噜| 色狠狠av一区二区三区香蕉| 国产精品一区二区无久久久| 成人午夜日韩看片后入| 99久久成人国产精品| 中文字幕最新在线资源| 三点水一个色是什么字| 欧美一区二区三区啪啪|