亚洲精品一区二区三区中文字幕,23部禽亲女小丹慢慢张开双,妺妺窝人体色www在线下载,xxxx丰满小少妇女高潮

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(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(fā)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(fā)生變化生成了另外一種白色的物質。

更新時間:2025-01-08

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

日本最新男男gayjapan| 欧美a级suv大全| 小受初次疼哭视频gvtaiki| 一本狠狠久久五月色丁香 | 皇上当众进入太子np主受| 色窝窝无码一区二区三区成人网站| 亚洲午夜精品一区二区麻豆| 女人被添全过程a一片| 色一情一乱一伦一区二区三区| 第一次玩老妇真实经历| 女人18片毛片60分钟 | 亚洲第一av网站| 天天做天天爱天天爽综合网| 亲嘴视频| 少妇人妻综合久久中文字幕| 亚洲精品一区国产| 波多野结衣视频| 不说就继续这样弄你| 成人视频网站| 办公室少妇激情呻吟a片在线观看 国产精品污www一区二区三区 | 波多野结衣vs黑人巨大| 巨大欧美黑人xxxxbbbb| 太长又太大又太粗太疼了| 麻豆国产精品番甜甜七夕| zoz○zo女人和另类zoz0| 男人天堂2018| 国产猛男gaygayxxgv| 穿着旗袍方便c英语老师| 日本老太做爰xx0ld| 欧美巨大粗爽av在线观看| 国产精品久久久久久精品| 亚洲av天堂综合网久久| 久久午夜夜伦鲁鲁片无码免费| 国产精品扒开腿做爽爽爽视频| 色欲av精品一区二区三区| 女人与公拘交酡免费网站| 玉蒲团夜宵魂免费观看| 亚洲精品区无码欧美日韩| 美女露100%双奶头无遮挡| 亚洲欧美日本韩国| 白嫩少妇bbw撒尿视频|