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管>氣體快速檢測管>187S礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

簡要描述:

總烴氣體檢測管187S GENERAL HYDROCARBONS,礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit氣體檢測管,礦物油,2.5-40mg/l檢測。www.yd666.com

更新時間:2025-07-30

在線留言
礦物油精(一種溶劑油)  石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

礦物油精(一種溶劑油)  石油溶劑油,石油醚,礦精,礦油精,松香水187S mineral spirit氣體檢測管,礦物油,檢測范圍2.5-40mg/l

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

色天天综合久久久久综合片| 丰满浓毛的大隂户自慰| 久久精品国产91久久综合| 欧美a色黄片一区二区三区| 樱桃视频大全免费高清版| 久久精品综合亚洲首页电影| 国产av高h精品一区二区| 亚洲国产精品麻豆一区二区| 国产三级a三级三级天天| 女同成熟中文字幕亚洲电影| 亚洲性AV综合在线观看| 亚洲欧美一区二区精品性色| 亚洲中文字幕AV在天堂| 久久夜色精品国产噜噜亚洲| 国语熟妇乱人乱a片久久| 国产性色av综合亚洲不卡| 欧美日韩亚洲中文在线观看| 和六十老女人高潮多次| 女人下边水润紧致好处| 欧美精品国产综合久久| 久久精品国产亚洲精品2020| 精品久久久久久无码中文野结衣| 护士在办公室里被躁中文字幕| 午夜黄色影院在线免费观看| 亚洲精品卡通动漫10页| 久久久久久久久国久久久| 999国产精品永久免费| 与上司出轨的人妻| 国产精品偷伦视频免费看| 淑芬两腿间又痒内裤不透气| 曰曰摸天天摸人人看综合| 西西人体扒开大胆大尺度展露| 精品无码久久久久国产app | 国产精品日韩深夜福利久久| 国产电影一区二区8888| 久久久综合中文字幕久久| 国产性行为视频在线观看| 日韩电影一区二区在线播放| 夜涩视频在线观看免费视频| 亚洲口爆吞精一区一青草| 大白肥妇BBVBBW高潮|