精品国产天线2019,色综合久久无码五十路人妻,亚洲熟悉妇女XXX妇女AV,亚洲H在线播放在线观看H

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>119U甲醇CH3OH氣體檢測管119U METHYLALCOHOL(METHANOL)20-1000ppm

甲醇CH3OH氣體檢測管119U METHYLALCOHOL(METHANOL)20-1000ppm

簡要描述:

甲醇CH3OH氣體檢測管119U METHYL ALCOHOL(METHANOL) 20-1000ppm,甲醇是一種無色、透明、易燃、易揮發(fā)的有毒液體,常溫下對金屬無腐蝕性(鉛、鋁除外),略有酒精氣味。分子量32.04,相對密度0.792(20/4℃),熔點-97.8℃,沸點64.5℃,閃點12.22℃,自燃點463.89℃,蒸氣密度 1.11,蒸氣壓 13.33KPa(100mmHg 21.2℃),蒸氣與空氣混合物爆炸極限 6~36.5 %(體積比) ,能與水、乙醇、苯、酮、鹵代烴

更新時間:2025-03-11

在線留言
甲醇CH3OH氣體檢測管119U METHYLALCOHOL(METHANOL)20-1000ppm

甲醇CH3OH氣體檢測管119U METHYL ALCOHOL(METHANOL) 20-1000ppm

Tube 19U

1. PERFORMANCE
1) Measuring range :20-1,000 ppm
Number of pump strokes 1(100ml)
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(0~20℃)(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Potassium dichromate is reduced
CH3OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
20
50
100
200
400
600
800
1000
ppm
GAS To pump
DEHUMIDIFIER
(White)
119U
METHYL ALCOHOL
(METHANOL)
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Esters FIG.2 〃
Paraffin (morefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Ketones 〃〃
Halogenated hydrocarbons 〃〃
0
500
1000
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Methanol indicating value 〔ppm〕
500
Coexistence
Interference
0
500
1000
Ethyl acetate〔ppm〕?
FIG.2 Influence of Ethyl acetate
Methanol indicating value 〔ppm〕
500
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20-40℃
(ppm) (32°F) (50°F) (68-104°F)
1000 1200 1100 1000
800 960 880 800
600 600 660 600
400 480 440 400
200 240 220 200
100 120 110 100
50 60 50 50
20 24 20 20

 
亚洲AV成人无码久久精品| 国产激情久久久久影院老熟女| 伊人久久大香线蕉AV一区二区| 亚洲 欧美 中文 日韩aⅴ| 精品久久久久久中文字幕无码| 一区二区三区在线 | 欧洲| 国精品无码人妻一区二区三区| 久久天堂AV综合合色蜜桃网| 色欲精品国产一区二区三区| 久久中文字幕人妻熟AV女| 国产AV无码专区亚洲AV麻豆 | 欧美熟乱第1页| 国产精品一区二区久久乐下载| 精品一线二线三线精华液| 国产精品特级毛片一区二区三区| 久久久久久久精品无码AV少妇| 下一站婚姻免费完整版在线观看| 久久久久久午夜成人影院| 精品国产一区二区三区色欲| 一个人在线观看视频的免费| 国产综合久久久久| 巨大欧美黑人xxxxbbbb| 嫩草院一区二区乱码| 98国产精品人妻无码免费| 成在线人AV免费无码高潮喷水| 国产成人综合欧美精品久久| 在线看国产一区二区三区| 成人美女黄网站色大免费的| 国产一区二区三区日韩精品| 日韩精品无码一区| 久久精品中文字幕一区二区三区| gogogo日本免费观看视频| 十大免费看大片app软件| 成人无码精品一区二区在线观看| a片毛片免费看| 一本色道久久综合亚洲精| 999久久久免费精品国产| 成人无码精品一区二区在线观看| sm调教论坛一区| 77777亚洲午夜久久多人| 欧美日韩视频无码一区二区三|