精品国产天线2019,色综合久久无码五十路人妻,亚洲熟悉妇女XXX妇女AV,亚洲H在线播放在线观看H

產品列表PRODUCTS LIST

首頁>產品中心>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發(fā)生化學反應并可改變顏色的化學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,其反應原理如下∶H2S+Pb(AC)2 PbS↓+2HAC

更新時間:2025-03-10

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

欧美+日本+国产| 最近2019年中文字幕完整版免费| 国产性猛交╳XXX乱大交| 久久精品国产亚洲av蜜臀| 久久久久久久99精品国产片| 24小时免费b站观看直播| 永久免费观看不收费的软件| 农村欧美丰满熟妇XXXX| 亚洲AV无码成人黄网站在线观看 | 嫩草国产福利视频一区二区| 国产人妻高清国产拍精品| 无码少妇精品一区二区免费| 亚洲爆乳无码精品AAA片蜜桃| 亚洲综合区图片小说区| 成熟人妻AV无码专区| 男男黄gay片免费网站www| 国产盗摄xxxx视频xxxx| 精品一区二区免费视频蜜桃网| 人人妻人人澡人人爽精品欧美| 加勒比色综合久久久久久久久| 国产精品一区| 国产精品无码一区二区三区免费| 99热最新成人国产精品| 日本黄a级a片国产免费| 永久免费的网站在线观看| 国产精品无码V在线观看| 欧美精品在线观看| 久久99亚洲精品久久久久| 蜜臀AV无码久久久久久久| 色拍拍在线精品视频| 免费无码又爽又刺激a片涩涩| 久久久久人妻一区精品色| 久久aⅤ无码av高潮av喷吹| 娇妻中日久久持久久| 亚洲av永久无码精品| 免费av在线观看| 国产欧美亚洲精品a| 免费无码又爽又高潮视频| 性欧美大战久久久久久久| 色拍拍拍免费视频在线| 亚洲av永久无码精品表情包|