国产办公室激情高潮在线,巨肉黄暴辣文高H文,娇妻与老头高潮在线观看,免费观看电视剧全集在线播放 ,亚洲精品乱码一区二区三区

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

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

簡要描述:

辛烷CH3(CH2)6CH3氣體檢測(cè)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(biāo)準(zhǔn)物質(zhì),也用于有機(jī)合成。健康危害: 對(duì)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(duì)環(huán)境有危害,對(duì)水體、土壤和大氣可造成污染,對(duì)大氣可造成嚴(yán)重污染。

更新時(shí)間:2025-07-30

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

辛烷CH3(CH2)6CH3氣體檢測(cè)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

国产性色av综合亚洲不卡| 黄在线看片免费人成视频| 亚洲午夜成人久久久久久| 国产aⅤ一区二区三区片| 日本一区二区免费精品视频| 黄色日韩av网址在线求| 国产免费久久精品一区二区| 国产精品午夜寻花约高颜值| 自拍偷在线精品自拍偷99| 久久久久久精品国产亚洲一| jul欧美一区二区三区| 超清无码无码区无码一区| 波多野结衣在线无码播放| 囯产亚洲精久久久久无码| 久久99热只有频精品8| 天天操鸡巴视频| 久久WWW成人免费直播| 欧美一区二区三区v11v| 欧美肥妇BWBWBWBXX小说| 国产精品亚洲一区二区毛片| 国产激情综合视频在线观| 久精品视频在线观看视频| 最新午夜男女福利片视频| 韩国主播午夜大尺度福利| 久免费最新视频在线观看 | 精品国产一区二区三区四| ZOOM与牛性胶ZOOM| 十大看免费行情的软件下载| 日韩精品一区二区三区少妇| 高潮久久久久久久av免费| 日本16岁RAPPER| 青青久久AV资源绿巨人| 护士在办公室里被躁中文字幕| 亚洲精品国产品国语在线| 污污污网站在线观看污污污| 特级毛片WWW| 色欲AV浪潮AV蜜臀AV麻豆 | 18禁亚洲深夜福利人口| 1997金瓶悔1一5杨思敏小说| 亚洲精品无码中文久久久| 国内精品人妻无码久久久影院导航 |