亚洲清纯唯美综合伊人色,大香蕉中码手机在线视频,欧美老黄片在线免费播放,亚洲午夜av一区二区三区

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>158S苯乙烯C6H5CH=CH2氣體檢測(cè)管158S STYRENE 2.5-300ppm

苯乙烯C6H5CH=CH2氣體檢測(cè)管158S STYRENE 2.5-300ppm

簡(jiǎn)要描述:

苯乙烯C6H5CH=CH2氣體檢測(cè)管158S STYRENE 2.5-300ppm,化學(xué)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(duì)眼和上呼吸道粘膜有刺激和麻醉作用。急性中毒:高濃度時(shí),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(shí)間:2025-08-28

在線留言
苯乙烯C6H5CH=CH2氣體檢測(cè)管158S STYRENE 2.5-300ppm

苯乙烯C6H5CH=CH2氣體檢測(cè)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

高清dvd碟片 播放| 少妇大叫太大太粗太爽了a片| 国产精品三级电影在线播放| 国产又黄又大又粗视频| 久久久久国产精品无套专区| 熟女天堂av一区二区三区| 极品少妇人av免费久久| 饱满的乳峰喷奶水视频| 鲁啊鲁啊乱视频在线观看| 日韩无码三级| 亚洲精品亚洲人成人网| 寡妇张开腿让黑人捅爽| 永久免费观看美女裸体的网站| 女人香蕉久久毛毛片精品| 少妇扒开双腿自慰出白浆| 无码av免费一区二区三区| 深闺禁伦强hnp| 动漫AV纯肉无码AV在线播放| 国产亚洲欧美精品app| 欧美亚洲精品不卡一区二区| 美女被鸡巴内射在线观看| 躁躁躁日日躁| 天堂А√在线地址| 婷婷综合缴情五月伊亚洲| 朝鲜女人free性hd| 超清乱人伦中文视频在线| 在线亚洲妇色中文色综合| 国产精品久久久免费蜜桃| 日韩无码高清| 丰满岳乱妇在线观看中字无码| 男按摩师下面又粗又大| 国产亚洲欧美日韩在线爱豆 | 成人 av 在线 捆绑| 可以自由侵犯的游戏| 日韩欧美高清在线一区二区| 免费国产黄网站在线观看视频| 久久久久久久打飞机电影| 久久午夜夜伦鲁鲁片无码| 日韩欧免费一区二区三区| 成人区人妻一区二区不卡| 亚洲激情成人网|