99久久国产精品人妻无码,国产免费av片在线观看,国产精品污www一区二区三区,真人性做爰无遮a片免费

產(chǎn)品列表PRODUCTS LIST

氧化硅膠收集管 No.801 Silica-gel tube

簡(jiǎn)要描述:

氧化硅膠收集管 No.801 不能被收集在活性炭中的極性溶劑蒸氣,例如甲醇。300mg單個(gè)部分的試管裝有溢出型指示劑。每盒20支裝。氧化硅膠收集管 No.801 Silica-gel tube

更新時(shí)間:2024-11-28

在線留言
氧化硅膠收集管 No.801 Silica-gel tube

氧化硅膠收集管 No.801 Silica-gel tube

氧化硅膠收集管 No.801 不能被收集在活性炭中的極性溶劑蒸氣,例如甲醇。300mg單個(gè)部分的試管裝有溢出型指示劑。每盒20支裝。氧化硅膠收集管 No.801 Silica-gel tube

801 is designed for sampling organic solvents in environmental air, particularly for polar solvents such as Methanol and Acetone which cannot be sufficiently adsorbed onto charcoal.
Organic solvent vapour is adsorbed onto the silica gel while passing through the tube. Adsorbed solvent is recovered with a desorption solvent followed by gaschromatographic analysis. When sample air corresponding to 60 to 80 & of the amount causing breakthrough is passed, the colour begins to change from blue to pink by the moisture from the silica gel side predicting breakthrough.

801是專為抽樣,尤其是如甲醇,丙酮極性不能得到充分的炭吸附溶劑到環(huán)境空氣中有機(jī)溶劑。

有機(jī)溶劑蒸氣吸附到硅膠管,同時(shí)通過(guò)傳遞。吸附溶劑回收與gaschromatographic分析奉行脫附溶劑。當(dāng)空氣樣本對(duì)應(yīng)60至80及造成的數(shù)額突破是通過(guò)顏色開(kāi)始由藍(lán)粉的水分從硅凝膠方變化預(yù)測(cè)的突破。

Tubes for working environment measurement

102SD Acetone 106SC Carbon monoxide 107U Ethyl ether
109U Chlorine 111U Ethyl acetate 111U Isopropyl acetate
112SC Hydrogen cyanide 118SD Benzene 120SB Hydrogen sulphide
120U Hydrogen sulphide 122SD Ethylene Oxide 124SB Toluene
126SB Carbon dioxide 128SD Acrylonitrile 132SC Vinyl chloride
134SB Trichloroethylene 135SA Tetrachloroethylene 138U Butyl acetate
143SB Xylene 145SA 1,2-Dichloroethylene 147S Carbon tetrachloride
150U Isopropyl alcohol 156S Hydrogen fluoride 158SB Styrene
160S 1,1,1-Trichloroethane 153U Isobutyl acetate 178SB Chlorobenzene
183U Cresol 189U 2-Butanol 197U Cyclohexanone
198U Methyl cyclohexanone 196S N,N-Dimethyl formamide 209U Isopentyl alcohol
141SB Carbon disulphide    

欧美精产国品一二三产品区别在哪| 又大又粗又爽a级毛片免费看| 国产又黄又猛又粗又爽的a片动漫| 日本japanese丰满白浆| 欧美18videosex性欧美| 在公交车上弄到高c了怎么办| 果冻传媒在线观看九一制片厂| 99精品国产在热2019| 女人被狂躁免费看30分钟| 久久午夜夜伦鲁鲁片无码免费| 女厕偷窥一区二区三区| 麻豆国产av国片精品有毛| 国产精品天干天干在线播放| 成熟yin荡美妞a片视频麻豆| 国产精品99久久久久久www| 寝室里的高潮(h)| 被公牛日到了高潮| 免费高清视频在线观看| 欧美性猛交 xxxx 乱大交| 伊人久久综合热线大杳蕉岛国| 人与嘼交av免费| 亚洲精品国产精品乱码视色| 新婚美人妻的沉沦| 国产乱码精品一区二区三区中文| 国产一区二区三区在线观看| 日本久久高清一区二区三区毛片| 亚洲日韩av无码精品放毛片| 特黄做受又粗又大又硬老头| 国产精品久久久亚洲偷窥女厕| 免费看人妻换人妻互换a片爽| 92久久偷偷做嫩草影院免费看| 偷看自己婆给别人玩经过| 国产做a爱免费视频在线观看| 顶开 肿胀 呻吟声粗喘| 久久久久久久| 男人一边吻奶边挵进去免费软件| 97在线观视频免费观看| 嫩草伊人久久精品少妇av网站| 国产日韩未满十八禁止在线观看| 欧美又粗又大xxxxbbbb疯狂| 天天爽夜夜爽夜夜爽精品视频|