丰满岳乱妇在线观看中字无码,漂亮的保姆5在线观看中文,把我绑在床头上夹奶头视频,免费人做人爱完整版视频

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:2025-01-15

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

亚洲精品国产AV天美传媒| 久久亚洲精品无码| 国产精品人人做人人爽人人添| AV无码人妻一区二区三区牛牛| 少妇精品揄拍高潮少妇| 亚洲欧洲无码av不卡在线| 最美情侣在线播放观看视频免费| 午夜无码一区二区三区在线观看 | 人妻尝试又大又粗久久| 玩朋友的丰满人妻| 性色a码一区二区三区天美传媒| 男男受爱gay同性xx亚洲| 日本大尺度床戏做爰3d肉蒲团 | 少妇无码av无码专区线| 欧美VIDEOS另类极品| 久久久www成人免费毛片| 野花高清完整版免费观看视频大全| 最近2019中文字幕大全视频1| 亚洲国产欧美国产第一区| 国内精品久久人妻无码hd| 98国产精品人妻无码免费| 国产成人精品无码一区二区 | 欧美成人看片黄A免费看| 亚洲va韩国va欧美va| 中文精品无码中文字幕无码专区| chinese体育生打飞j视频| 亚洲国产精品久久久久秋霞影院| 亚洲国产一区二区三区| 欧美xxxx做受性欧美88| 69堂人成无码免费视频果冻传媒| 久久精品国产99久久久香蕉| 成人午夜精品无码区| 99e久热只有精品8在线直播 | 18以下岁禁止1000部免费 | 亚洲综合精品一区二区三区| 日韩精品无码一本二本三本| 强开小嫩苞第一次免费视频| 97精品人妻一区二区三区香蕉| 国内精品久久久久久99蜜桃 | 欧美大片18禁aaa免费视频| 国产av无码国产av毛片|