免费无码成人AV电影在线播放,精品露脸国产偷人在视频,国产成人免费视频,少妇高潮a片无套内谢麻豆传

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管>氣體快速檢測管>187S辛烷CH3(CH2)6CH3氣體檢測管187S Octane 100-2800ppm

辛烷CH3(CH2)6CH3氣體檢測管187S Octane 100-2800ppm

簡要描述:

辛烷CH3(CH2)6CH3氣體檢測管187S Octane 100-2800ppm,CAS 11-65-9,爆炸上限%(V/V): 6.5 爆炸下限%(V/V): 0.8,主要用途: 用作溶劑及色譜分析標準物質(zhì),也用于有機合成。健康危害: 對人的眼睛、呼吸道粘膜有刺激作用,有麻醉和肺部刺激作用。環(huán)境危害: 對環(huán)境有危害,對水體、土壤和大氣可造成污染,對大氣可造成嚴重污染。

更新時間:2025-10-29

在線留言
辛烷CH3(CH2)6CH3氣體檢測管187S Octane 100-2800ppm

辛烷CH3(CH2)6CH3氣體檢測管187S Octane 100-2800ppm

Tube 87S

1. PERFORMANCE
1) Measuring range :50-1,400 ppm(as n-Hexane)
Number of pump strokes 1(100ml)
2 pump strokes(200ml)are required for Kerosine and Mineral tupentine
determination.
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(refer to "Table 2. Temperature CorrectionTable")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Orange→Yellowish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%(Controlled on n-Hexane)
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3(CH2)4CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1400
1200
1000
800
600
400
200
100
50
ppm
????
????
187S GENERAL HYDROCARBONS
Substance Interference Coexistence
The bottom of the discoloured
Aromatic hydrocarbons layer is changed to Black and
higher readings are given.
It has no influence on readings even if Alcohols, Esters or Ketones each co-exists up to 6%.
(NOTE)
1)Determine the concentration of objective gas by multiplication with the figure shown in Table 1 after
temperature correction.
Example)For measuring Heptane at 10℃ of temperature
Reading concentration :600 ppm
Concentration on temperature correction :660 ppm
Concentration of Heptane :990 ppm
Table.2 Temperature Correction Table (20℃standard)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
1400 1630 1530 1400 1270 1180
1200 1400 1320 1200 1090 1010
1000 1170 1100 1000 910 840
800 930 870 800 720 670
600 700 660 600 550 500
400 460 430 400 360 330
200 220 210 200 180 170
100 100 100 100 100 100
Unit:ppm
Name of Gas Figure Name of Gas Figure
Isobutane 0.8 Heptane 1.5
Pentane 0.8 Octane 2.0
n-Hexane 1.0 Cyclohexane 1.0

亚洲处破女 WWW| 荫蒂添的好舒服视频囗交| 欧美性大战xxxxx久久久| 亚洲AV综合AV一区二区三区| 国产在线视频一区二区三区| 午夜不卡久久精品无码免费| 大侦探第八季免费观看完整版高清| 风流老熟女一区二区三区| 日本肉体裸交xxxxbbbb | 精品国产一区二区三区AV性色| 国产精品国产三级区别第一集| 国产普通话对白刺激| 亚洲午夜精品A片久久| 亚洲精品色情app在线下载观看| 国产老肥熟xxxx| 久久国产一区二区三区| 国产av一区二区三区最新精品 | 亚洲AV无码码潮喷在线观看| 67194线在线精品观看| 日本强伦姧人妻一区二区| 人妻丰满熟妇AV无码片| 亚洲色成人中文字幕网站| 亚洲欧美国产精品专区久久| 色费女人18毛片a级毛片视频| 精品久久久久久亚洲中文字幕| 日本japanese丰满少妇| 日本公与熄乱理免费观看| 中文字幕久久久久人妻中出| 免费看大片的app| 久久偷看各类wc女厕嘘嘘偷窃| 国产成人啪一区二区免费| 光棍天堂手机2019版免费观看| 精品久久久久久久免费人妻| 欧美丰满大胆少妇xxxooo| 国产午夜无码视频在线观看| 97精品国产一区二区三区| 亚洲AV午夜国产精品无码中文字 | 久久人人妻人人爽人人爽| 国产黄大片在线观看| 邻居少妇张开双腿让我爽一夜 | 久久久久免费看黄a片app|