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>139SB醋酸異丁酯CH3CO2CH2CH(CH3)2氣體檢測管139SB ISOBUTYL ACETATE

醋酸異丁酯CH3CO2CH2CH(CH3)2氣體檢測管139SB ISOBUTYL ACETATE

簡要描述:

醋酸異丁酯CH3CO2CH2CH(CH3)2氣體檢測管139SB ISOBUTYL ACETATE 0.01-1.4%,主要用作硝基漆和過氯乙烯漆的稀釋劑,也可用作溶劑,還可作為塑料印花漿的稀釋劑、制藥行業(yè)的萃取劑等。便攜式氣體檢測管醋酸異丁酯檢測管(CH3CO2CH2CH(CH3)),便攜式氣體檢測管醋酸異丁酯檢測管(CH3CO2CH2CH(CH3)),便攜式氣體檢測管醋酸異丁酯檢測管(CH3CO2CH2CH(CH3))

更新時間:2025-10-20

在線留言
醋酸異丁酯CH3CO2CH2CH(CH3)2氣體檢測管139SB ISOBUTYL ACETATE

醋酸異丁酯CH3CO2CH2CH(CH3)2氣體檢測管139SB ISOBUTYL ACETATE 0.01-1.4%

Tube 39SB
1. PERFORMANCE
1) Measuring range :0.01-1.4%
Number of pump strokes 2(200ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :10 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Graduations printed on the tube are calibrated by Methyl ethyl ketone at 2 pump
strokes and Propyl acetate concentration is determined by using a conversion chart.
7) Colour change :Orange→Brownish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3CO2(CH2)2CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
1.4
1.2
1.0
0.8
0.6
0.2
0.1
0.05
0.01
%
GAS To pump
139SB C PROPYL ACETATE
Substance Interference ppm Coexistence
Acetylene 3% Whole reagent is changed to Brown.
Propane 0.2% 〃
Other organic gases or vapours
except Halogenated hydrocar- Similar stain is produced. Higher readings are given.
bons
Propyl acetate(%)?
39SB Tube reading(%)?
(200ml)?
0.01
0.05
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.01
0.1
0.2
0.5
1.0
1.4

中文字幕无码毛片免费看| 免费看大片的播放器| 欧美午夜精品久久久久久浪潮 | 两个人看的www在线观看| 免费国产AV在线观看| 男男受爱gay同性xx亚洲| 中文字幕无码乱人伦| 99久免费视频精品| 日韩精品无码专区免费播放| 无码熟熟妇丰满人妻啪啪| 中文字幕精品无码亚洲字| 丰满少妇a片免费观看| 国产剧情av精品迷奷| 人妻少妇看a偷人无码| 亚洲av无码日韩av无码网站冲| 欧美乱妇无乱码大黄a片| 免费看大片的app| 丁香花在线观看视频在线| 国产精品婷婷久久爽一下| 黄瓜视频下载| 中文字幕人妻伦伦| 久久久久99人妻一区二区三区| 精品久久久久久无码中文字幕| 午夜福利麻豆国产精品| 色狠狠色噜噜AV天堂一区| 国产精品婷婷久久爽一下| 果冻传媒av毛片无码蜜桃| 亚洲av午夜电影在线观看| 青椒国产97在线熟女| 日本免费无码一区二区到五区| 久久久久久久99精品免费观看| 亚洲人成色777777精品音频| 亚洲国产精品久久久久秋霞影院 | 国产精品毛片一区二区| 乱人伦人妻精品一区二区| 亚洲精品深夜av无码一区二区| 狠狠色噜噜狠狠狠888米奇视频| 无码人妻少妇伦在线电影| 精品久久香蕉国产线看观看亚洲| 久久久久人妻一区二区三区VR| 亚洲av无码一区二区三区性色 |