欧美 国产 日本,嗯,嗯,嗯太舒服了视频,久久激情热播免费视频,午夜婷婷大香蕉

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>158S苯乙烯C6H5CH=CH2氣體檢測管158S STYRENE 2.5-300ppm

苯乙烯C6H5CH=CH2氣體檢測管158S STYRENE 2.5-300ppm

簡要描述:

苯乙烯C6H5CH=CH2氣體檢測管158S STYRENE 2.5-300ppm,化學品英文名稱: phenylethylene ,Ethenylbenzene, Styrol, Vinyl benzene, Cinnamene, Styrolene, Cinnamol,中文名稱2: 乙烯基苯 ,乙烯苯,蘇合香烯,斯替林,健康危害: 對眼和上呼吸道粘膜有刺激和麻醉作用。急性中毒:高濃度時,立即引起眼及上呼吸道粘膜的刺激,出現(xiàn)眼痛、流淚、流涕、噴嚏、咽痛、咳嗽等,繼之頭痛、頭暈、惡心、嘔吐等

更新時間:2025-07-03

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
苯乙烯C6H5CH=CH2氣體檢測管158S STYRENE 2.5-300ppm

苯乙烯C6H5CH=CH2氣體檢測管158S STYRENE 2.5-300ppm

Tube 58S
1. PERFORMANCE
1) Measuring range :5-300 ppm 2.5-150 ppm
Number of pump strokes 1(100ml) 2(200ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.5 ppm(200ml)
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump stroke
7) Colour change :White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:15% RSD-high : 10%
3. CHEMICAL REACTION
A polymer of Styrene is produced by sulphuric acid.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
300
250
200
150
100
50
20
5
ppm
GAS To pump
158S STYRENE
Substance ppm Interference ppm Coexistence
Acrylonitrile FIG.1 Tafhfeec atecdc.uracy of readings is not 400 Lower readings are given.
Butadiene 3 Similar stain is produced. 5 Uneven discolouration is produced
FIG.2 and higher readings are given.
Formaldehyde 〃15 Yellowish orange stain is produced
FIG.3 and higher readings are given.
Acetaldehyde 〃350 Similar stain is produced and
higher readings are given.
Methyl alcohol The accuracy of readings is not 0.35% Pale discolouration is produced
affected. and higher readings are given.
Ethyl alcohol 〃0.18% 〃
Ethyl acetate 〃700 〃
Butyl acetate 〃700 〃
(NOTE)
In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration=1/2×Reading value.
0
200
100
Acrylonitrile Butadiene
FIG.1 Influence of Acrylonitrile Styrene indicating value 〔
ppm〕
500 1000 0
200
100
FIG.2 Influence of Butadiene
Styrene indicating value 〔ppm〕
〔ppm〕? 50 100 0
200
100
Formaldehyde
FIG.3 Influence of Formaldehyde

国产又爽又粗又猛的视频| 大香蕉久久久| 无码国产69精品久久久孕妇| 天天爽亚洲中文字幕| 国产成年无码久久久久下载| 性熟妇ⅹxxooozzxx| 蜜臀久久99静品久久久久久| 人妻初次3p细腻经历| 激情欧美一区二区三区| 狠狠躁夜夜躁AV网站中文字幕| 欧美激情另欧美做真爱| 国产欧美另类久久精品蜜芽| 国产午夜精品一区二区三区软件| 国产在线无码一区二区三区| 荣成市| 国产草草影院ccyycom| 色哟哟免费精品网站入口| 91露脸熟女四川熟女在线观看| 国产 av 仑乱内谢| 无码国产精品一区二区免费VR | 久久久AV波多野一区二区| 无码国产精品一区二区免费3p| 无码人妻一区二区三区免费视频| 日产精品久久久久久久蜜臀| 久久精品国产亚洲不AV麻豆| 无码熟熟妇丰满人妻啪啪软件| 成年免费A级毛片免费看| 免费的污污的网站在线观看| 白水县| 内射国产内射夫妻免费频道| 黄色www.| 韩国av| 人妻熟女| 欧美日韩亚洲tv不卡久久| 性生活网站| 性欧美xxxxx乱极品少妇| 民和| 亚洲 小说区 图片区 都市| 我们在线观看免费完整版日本| 亚洲第一区无码专区| 国产欧美va天堂在线观看视频|