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>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:2025-01-15

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

 
久久精品国产亚洲av麻豆蜜芽| 特黄特色大片免费播放器图片| 善良的嫂子在线观看| 亚洲精品久久久久久| 日本老年老熟无码| 日韩精品一区二区三区四区蜜桃| 亚洲色大网站WWW永久网站| 一本大道久久香蕉成人网| 久久午夜无码鲁丝片| 少妇无码一区二区三区免费| 久久www免费人成精品| 久久夜色精品亚洲噜噜国产av | 国产精品麻豆va在线播放| 精品欧洲av无码一区二区三区| 在线观看免费视频| 精品无码人妻一区二区三区品| 咒术回战第二季免费观看| 国产九九九九九九九A片| 天堂网在线观看| 九九精品99久久久香蕉| 30分钟人性短片免费| 99久久久国产精品免费蜜臀| 国产伦视频电影网站| 久久精品国产亚洲av高清色欲| 精品国精品国产自在久国产应用| 少妇被躁爽到高潮无码人狍大战| 97久久精品午夜一区二区| 丰满少妇高潮惨叫久久久| 最近中文字幕mv免费高清视频| 亚洲va中文字幕| 一个人hd高清在线观看| 国产精品大白屁股XXXXX| 国产肉体xxxx裸体784大胆| 麻豆一区二区三区精品视频| 亚洲一区二区三区无码国产| 无码专区一va亚洲v专区在线| 免费做爰猛烈吃奶摸视频在线观看 | 玩弄少妇的肉体k8经典| 亚洲第一aaaaa片| 国语熟妇乱人乱a片久久| 日本巜侵犯人妻人伦|