韩漫画免费在线观看入口,国产精品欧美久久久久久久,99欧美精品一区二区三区,日韩欧激情一区二区三区

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總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

簡要描述:

187S GENERAL HYDROCARBONS (+) 總烴,50-1400ppm Cyclohexane 環(huán)己烷C6H12 檢測管為什么會有顏色變化?發(fā)生顏色變化的真正原因是檢測管里面的檢測試劑與氣體接觸時,發(fā)生的化學(xué)反應(yīng),從而生成了另外一種不同的物質(zhì)。
例如,當(dāng)二氧化碳檢測管里面的白色試劑接觸到二氧化碳?xì)怏w時,發(fā)生變化生成了另外一種紫色的物質(zhì)。當(dāng)氧氣檢測管里面的黑色試劑與氧氣接觸時,發(fā)生變化生成了另外一種白色的物質(zhì)。

更新時間:2025-07-02

在線留言
總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

Tube No.
137
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
Table.1 Coefficient Chart

欧美大片va欧美在线播放| 啊啊好想被大鸡巴操视频| 国内久久久久久久久久人| 久久久久久国产精品三区| 亚洲乱码中文字幕综合站| 国自产精品手机在线视频| 日本被强制侵犯亚洲播放| 国产超高清无码不卡AV| 午夜成人免费观看福利片| 欧美片中文字幕一区二区| 白嫩小逼v88免费观看| 国产精品久久久久久久a| 精品久久久久无码人妻热| 久久久精品国产调教网站| 国产综合精品久久久久久久| 欧美男人日女人群交视频| 黑森林尤物精品∧v导航| 小色哥在线免费观看视频| 久久综合九色综合色多多| 精品国产成人福利免费看| 亚洲欧美国产成人综合网| 国产精品高清尿小便嘘嘘| 日日碰狠狠躁久久躁少妇熟女人妻| 狠狠色成人一区二区三区| 日本无码黄动漫在线观看| 亚洲日韩中文字幕无码一区| 毛片无遮挡高清免费久久| 最近高清中午字幕在线5| 99久久一区二区三区免费| 亚洲天堂a视频在线观看| 亚洲综合中文字幕无线码| 欧美亚洲国语精品一区二区| av在线观看亚洲一区二区| 爽爽无码18禁免费国产| 久久精品国产亚洲黑森林| 国产精品无码av不卡顿| 精品日操亚洲| 亚洲成aⅴ人片乱码色午夜| 国产av一区二区| 午夜福利在线观看亚洲一区| 91麻豆亚洲国产成人久久|