激情五月综合色婷婷一区二区,亚州AV色倩片在线观看,国产精品亚洲二区三区在看,国产精品无码v在线观看

產品列表PRODUCTS LIST

首頁>產品中心>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 環己烷C6H12 檢測管為什么會有顏色變化?發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,發生的化學反應,從而生成了另外一種不同的物質。
例如,當二氧化碳檢測管里面的白色試劑接觸到二氧化碳氣體時,發生變化生成了另外一種紫色的物質。當氧氣檢測管里面的黑色試劑與氧氣接觸時,發生變化生成了另外一種白色的物質。

更新時間:2025-08-12

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

国产av精品国语对白国产| 日韩一区二区人妻9999| 国产精品黑丝美女啪啪啪| 男人天堂网av在线播放| 亚洲 自拍 另类小说综合图区| 18禁动漫一区二区三区| 国产91熟女高潮一区二| julia ann 精品艳妇| 欧美精品人爱c欧美精品| 爱情岛论坛午夜福利视频| 99精品免费久久久久久| 黄色网在线观看| 精品精品国产自在97香蕉| 国产精品久久久久久搜索| 嗯啊用力一区二区三区av| 少妇爆乳无码专区网站冫| 国产末成年毛片AⅤ在线| 亚洲综合在线亚洲优优色| 91人妻人人澡人人爽精品| 蜜臀av性久久久久蜜臀aⅴ麻豆 | 日本黄色网站在线看不卡| H无码成人动画在线观看| 免费无码黄动漫视频软件| 国产午夜福利精品一区二区三区| 日本vs欧美一区二区三区| 亚洲欧美suv精品| 亚洲国产中文日韩欧美在线| 99re热免费视频一区| 国产啪亚洲国产精品无码| 日韩激情无码激情a片免费软件| 国产亚洲精品99999| 日本一区二区不卡高清视频| 久久久精品一区二区三洲| 亚洲欧洲vat| 一道本在线观看免费视频| 日韩小视频在线| 色偷偷久久一区二区三区| 亚洲高清专区日韩精品95| 日韩午夜短视频在线观看| 国产亚洲精品综合99久久| 蜜臀avxxx在线播放|