精品国产乱子伦一区二区三区,免费无码又色又爽的视频软件,亚洲AV无码成人精品区,99国产精品国产精品九九

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丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 5-500ppm

丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 5-500ppm

簡(jiǎn)要描述:

丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 乙二醇乙醚,乙二醇單乙醚,乙二醇-乙醚檢測(cè)管,丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 5-500ppm,氣體檢測(cè)管法的應(yīng)用特點(diǎn):氣體檢測(cè)管法實(shí)際上是將化學(xué)分析方法儀器化,化學(xué)分析的繁瑣步驟已被生產(chǎn)檢測(cè)管的工業(yè)手段所取代,所以它具有化學(xué)分析和儀器分析的雙重優(yōu)點(diǎn)。

更新時(shí)間:2024-10-30

在線留言
丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 5-500ppm

丁烯醛C2H5OCH2CH2OH檢測(cè)管190U ETHYL CELLOSOLVE 5-500ppm

Tube 90U
1. PERFORMANCE
1) Measuring range :5-500 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 :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
HOCH2CH2OCH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
5
20
50
100
150
200
300
400
500
ppm
300ml
GAS To pump
DEHUMIDIFIER
(White)
190U METHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Ethers 〃〃
Paraffin (morefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.1 〃〃
0
400
500
200
300
Trichloroethane〔ppm〕?
FIG.1 Influence of Trichloroethane
Methyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
100
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (86°F) (95°F)
500 800 620 500 410 335 265
400 620 490 400 325 260 200
300 450 365 300 245 195 145
200 290 245 200 160 125 95
150 215 185 150 120 90 70
100 145 125 100 80 60 45
50 75 65 50 40 30 25
20 30 25 20 15 12 10
5 10 7 5 4 3 2
(NOTE)
This tube scale is calibrated based on Ethyl cellosolve and the same scale is available for Methyl cellosolve.

久激情内射婷内射蜜桃| 国产SUV精品一区二人妻| 久久久久久AV无码免费网站下载| 亚洲日韩AV无码| 日韩人妻无码一区二区三区| 好硬你摸摸下面涨的很疼| 亚洲乱码爆乳精品成人毛片| 男女激情视频| 狠狠色噜噜狠狠狠狠AV不卡| 亚洲国产精品美女久久久久AV| 人人妻人人澡人人爽国产一区| 色欲久久久天天天综合网| 亚洲精品国产精品国自产观看| YSL千人千色YESE88网站| 女人与公拘交酡ZOZO| 娇妻互换享受高潮| 亚洲国产精品久久久久久无码| 裸身美女无遮挡永久免费视频| 日本护士毛茸茸高潮| 日本少妇高潮喷水XXXXXXX| 亚洲AV无码一区二区乱子伦AS| 亚洲精品无码永久中文字幕| 成人精品视频WWW观看天堂| 小寡妇高潮流白浆A片| 在线观看的免费视频网站| 精品国产一区二区三区久久久狼| 亚洲女人被黑人巨大进入| 宿主每日被GUAN满的日常| 被黑人伦流澡到高潮HNP动漫| 国模生殖欣赏337METCN| 国精品无码一区二区三区在线蜜桃| 征服同学人妇系列陈露露3| 国产亚洲精品久久久久久久久动漫| 国产精产国品一二三产区区别| 久久精品国产亚洲AV麻豆色欲| 又大又粗又硬又爽又黄毛片| 又狠又深H军人高干| 午夜精品久久久久久久久| 88国产精品欧美一区二区三区| 国产精品美女午夜爽爽爽免费| 小受初次疼哭视频GVTAIKI|