成人毛片无码一区二区三区,亚洲精品成人无码中文毛片,亚洲国产精品尤物yw在线观看,人妻互换精品一区二区

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:2025-12-16

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

国产97在线 | 免费| 日本熟妇乱妇熟色a片蜜桃| 久久久久亚洲AV成人片一区| 亚洲最大天堂无码精品区| 韩国精品福利一区二区三区| 中文无码熟妇人妻av在线| 久久精品中文字幕一区| 国产A国产片国产| 久久久久久亚洲AV成人无码国产| 精品久久亚洲中文无码色欲av| 色欲A∨无码蜜臀AV免费播| 日韩毛片免费无码无毒视频观看| 国产精品免费一区二区三区四区| 日韩夜夜高潮夜夜爽无码| 欧美熟妇另娄久久久久久| 欧美13一14娇小性| 四虎成人精品在永久免费| 日韩AV无码AV免费AV不卡| 亚洲av无码国产一区二区| 337p日本欧洲亚洲大胆色噜噜| 国精产品一区二区三区糖心| 久久国产人妻一区二区| a片毛片免费无限观看| 国产午夜片无码区在线播放| 国产尤物AV尤物在线观看| 97久久国产亚洲精品超碰热| 亚洲国产精品无码久久久老少| 国内精品久久久久久久影视麻豆| 四川丰满少妇被弄到高潮| 亲子乱av一区二区三区| 18禁黄污吃奶免费看网站| 永久免费AV无码网站在线观看| 日本丰满人妻XXXXXHD| 亚洲综合色一区二区三区| 国产亚洲精品久久777777| 色欲精品久久人妻av中文字幕| 久久水蜜桃亚洲av无码精品| 欧美丰满熟妇bbbbbb | 午夜精品久久久久久| 日本最大但人文艺术第一组| 成人午夜亚洲精品无码网站|