国产又粗又猛又爽又黄男女-少妇无码又大又粗又深免小说-国产精品久久久久电影网-精品久久洲久久久久护士车痴电汉

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:2025-08-20

發郵件給我們: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

主站蜘蛛池模板: 亚洲最大福利在线观看| 日韩近亲视频在线观看| 最新中文字幕不卡av| 蜜臀av性久久久久av蜜臀二区| 公侵犯美丽人妻中文字幕| 欧美综合性自拍亚洲综合图| 熟女人妻国产中出在线| 亚洲综合中文字幕日韩| 丁香婷婷激情国产高清秒播| 日本一区二区三区四区五区免费| 久久久久久国产高潮呻吟| 日本精品一区久久久久久 | 亚洲色图欧美激情在线观看| 久久一区二区三区美女| 不卡视频在线一区二区| 日本中文字幕无线观看日本| 91丝袜视频在线播放| 成人爱爱视频在线免费观看| 人妻av一区二区在线观看| 青青网黄色片在线观看| 91成人爽片在线观看| 日本一区二区三区蜜桃| 欧美一区二区欧美精品播放| 国产草草在线观看视频| 久久av免费一区二区三区国产| 精品人妻一区三区三区| 91深夜福利视频官网| 国产亚洲一区二区三区在线看| 亚洲国产成人综合一区二区三区 | 亚洲精品区一区二区三| 国产又粗又猛又黄的网站| 激情五月婷婷综合丁香| 日韩一区在线观看视频| 国产精品视频午夜福利| 色综合天天综合中文网| 高清青草视频在线观看| 中文字幕乱码伊人三级| 国产嘿咻一区二区三区| 麻豆美女的丝袜诱惑| 日韩午夜福利视频在线观看| 污片网站在线观看免费|