久久久久久精品成人免费图片,(原创)露脸自拍[62p],免费60分钟床,国内最真实的xxxx人伦

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>211U丙烯酸乙酯CH2=CHCO2C2H5氣體檢測管211U ETHYL ACRYLATE 5-60ppm

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測管211U ETHYL ACRYLATE 5-60ppm

簡要描述:

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測管211U ETHYL ACRYLATE 5-60ppm (+) 檢測劑是將某些能與待測物質(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,如硫化氫檢測管,其反應(yīng)原理如下∶H2S+Pb(AC)2 PbS↓+2HAC

更新時間:2025-01-08

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

丙烯酸乙酯CH2=CHCO2C2H5氣體檢測管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

爆乳2把你榨干哦ova在线观看| 连开两个处苞过程| 亚洲色成人网站www永久四虎| 局长含着秘书的小奶头| 色狠狠色噜噜av天堂五区| 男女啪啪流出白色液体| 美女高潮黄又色高清视频免费| 激烈 痉挛 抽搐 潮喷 mp4| 公翁的粗大放进我的秘密电影| 成人免费区一区二区三区| 亚洲va中文字幕无码2020| 女人被躁的高潮嗷嗷叫 | 欧洲精品码一区二区三区免费看| 国产中文字幕| 成人免费ā片在线观看| 汤芳人体摄影| japanese日本丰满少妇| 日本免费一区二区三区视频观看 | 坐公交车居然被弄了2个小时| 色婷婷五月综合中文字幕| 欧美激情一区二区三区| 年轻的护士3韩国三级| 初学生的粉嫩小洗澡视频| 人妻互换亂倫激情| 亚洲av无码国产综合专区| 扒开她粉嫩的小缝尿进去h漫画| 正文第1章初尝云雨| 国内永久免费crm系统z在线| 12—13女人做a片| 极品少妇XXOO无码播放| 国产精品无码免费专区午夜| 中国美女撒尿txxxx视频偷窥| 日韩精品无码一区aaa片| 久久精品一区二区三区中文字幕| 顶开 肿胀 呻吟声粗喘| 男男调教惩罚做到哭play| 色戒完整版无删减158分钟hd| 国产特级毛片a片www| 被几个人摁住玩弄隐私作文| 国产麻豆精品一区二区三区| 国产中老年妇女精品|