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(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>190U乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm

乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm

簡(jiǎn)要描述:

乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U ETHYL CELLOSOLVE ACETATE (+) 5-150ppm,操作簡(jiǎn)便:用檢測(cè)管測(cè)定氣體濃度時(shí),不需要同化學(xué)分析那樣加用多種化學(xué)試劑和使用各種玻璃儀器,一般也無(wú)需進(jìn)行計(jì)算。也無(wú)需儀器分析那樣做好復(fù)雜的測(cè)前準(zhǔn)備。工作步驟僅有采樣和結(jié)果顯示兩步,而這兩步又幾乎是同時(shí)進(jìn)行的,這就為專業(yè)分析人員提供了極大方便,即使對(duì)沒有分析基礎(chǔ)知識(shí)的人,如現(xiàn)場(chǎng)工程技術(shù)或操作人員,只要參照使用說明或?qū)ζ渖约又笇?dǎo)就可以應(yīng)用。

更新時(shí)間:2025-04-28

在線留言
乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm

乙烷纖維素溶劑醋酸鹽C2H5OC2H4OCOCH3 190U 5-150ppm

1. PERFORMANCE
1) Measuring range :5-100 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 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 Ethyl cellosolve at 3 pump strokes
and 1-Butanol concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CH2CH2CH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
50
20
100
150
200
300
400
500
5
300ml
ppm
GAS To pump
DEHUMIDIFIER
(White)
Tube No.
1-BUTANOL
Substance ppm Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Toluene 200 Whole reagent is changed to Pale blue. 〃
Hexane 1,000 The accuracy of readings is not affected. The accuracy of readings is not affected.
Trichloroethylene 1,000 〃〃
Ethyl acetate FIG.2 1,000 〃〃
0
100
50
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
1-Butanol indicating value 〔ppm〕
50 100
Coexistence
Interference
0
100
50
Ethyl acetate〔ppm〕?
FIG.2 Influence of Ethyl acetate
1-Butanol indicating value 〔ppm〕
500 1000
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
100 - - 100 85 77
80 - - 80 70 63
60 - 80 60 53 50
40 75 50 40 35 33
20 30 23 20 18 16
10 13 11 10 9 8
5 5 5 5 5 5
1-Butanol(ppm)?
90U Tube reading(ppm)

香蕉欧美成人精品av在线| 久久久久亚洲AV无码专区桃色| 国产精品无码专区AV在线播放| 内射人妻少妇无码一本一道| 性xxxx欧美老妇胖老太肥肥| 日韩欧美高清dvd碟片 | 久久久亚洲一区二区三区| 国产SUV精二区69| juliaann精品艳妇| 无码av一区二区三区| 东京无码熟妇人妻av在线网址| 九九热这里只有精品| 二区国产好的精华液单品榜| 国产成人精品国内自产拍| 国产精品久久久久久久久KTV| 人妻少妇征服沉沦| 精品久久久久久无码人妻中文字幕| 国产在视频线精品视频| 欧美大尺寸SUV| 婷婷久久香蕉五月综合加勒比| 丝袜 亚洲 另类 欧美 变态| 亚洲AV无码一区二区三区人| 自拍偷在线精品自拍偷99| 久久国产人妻一区二区| 天天影视色香欲综合久久| 久久久久久久波多野结衣高潮| 一个人在线观看视频的免费| 无码欧美毛片一区二区三| 国产精品久久久久久无码av片 | 熟女少妇丰满一区二区| 成人性生交大片免费看r| 蜜臀久久精品久久久久酒店| 少妇极品熟妇人妻| 69久久久久精品9999不卡片| 久久综合狠狠色综合伊人| 久久亚洲色WWW成人欧美| 国产精品AV| 精品人人妻人人澡人人爽牛牛| 久久精品国产色蜜蜜麻豆国语版| 人妻少妇精品久久久久久| 国产精品一亚洲AV日韩AV欧 |