亚洲中文字幕啪啪一区二区,看亚洲欧洲在线视频,国产福利不卡在线视频,欧美日韩一区二区人妻

產(chǎn)品列表PRODUCTS LIST

首頁>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:2025-05-06

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(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

我要看成人免费毛片| 日本免费精品一区二区三区四区| 国产高欧美性情一线在线| 高颜值美女视频在线观看| 亚洲 欧美 精品 高清| 九热中文字幕在线| 青青河边草直播免费观看| 国产精品视频一区二区三区分享| 午夜十八禁福利亚洲一区二区| 激烈18禁高潮视频免费| 美国大骚逼啊啊啊| 让女人下面出水视频| 骚逼被操视频拳交| 美女嫩逼插进大屌| 伊人久久丁香色婷婷啪啪| 亚洲男人的天堂2023| 美女嫩逼插进大屌| 久久久久有精品国产麻豆| 欧美日韩视频在线一区二区| 一区二区三区四区五六区| 久久国产精品成人18p| 黄网官方在线观看| 美女被插入小穴爆操视频| 差鸡巴没码在线观看| 麻豆视频一级片在线观看| 亚洲精品成人无码| 黑丝美女被操哭边操边尿| 插逼爽歪歪视频免费| 插BB流水水视频| 日韩欧美一级特黄大片欧| 精品v欧洲高清欧美| 中文字幕乱码人妻一区二区三区| 欧美日韩久久久一区二区三区| 老熟妇高潮一区二区高清视频| 中日美女毛5片一区二区三区| 大鸡吧天天草黑逼| 婷婷激情五月天四房| 久久久久黑人强伦姧人妻| 国产精品粉嫩懂色av| 国产伦精品一区二区三区视频抖音| 色999日韩自偷自拍美女|