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(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>209U異戊醇(CH3)2CH(CH2)2OH氣體檢測管209U ISOPENTYL ALCOHOL

異戊醇(CH3)2CH(CH2)2OH氣體檢測管209U ISOPENTYL ALCOHOL

簡要描述:

異戊醇(CH3)2CH(CH2)2OH氣體檢測管209U ISOPENTYL ALCOHOL 5-100ppm,中文名稱2:3-甲基丁醇,健康危害: 吸入、口服或經(jīng)皮膚吸收有麻醉作用。其蒸氣或霧對眼睛、皮膚、粘膜和呼吸道有刺激作用,可引起神經(jīng)系統(tǒng)功能紊亂,長時(shí)間接觸有麻醉作用。主要用途: 用作照相化學(xué)藥品、香精、分析試劑,以及用于有機(jī)合成、制藥等。

更新時(shí)間:2025-01-08

在線留言
異戊醇(CH3)2CH(CH2)2OH氣體檢測管209U ISOPENTYL ALCOHOL

異戊醇(CH3)2CH(CH2)2OH氣體檢測管209U ISOPENTYL ALCOHOL 5-100ppm

Tube No.209U
1. PERFORMANCE
1) Measuring range :5-100 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)2CHCH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
100
80
60
40
20
10
5
300ml
ppm
(White)
DEHUMIDIFIER
209U ISOPENTYL ALCOHOL
Substance ppm Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Toluene FIG.2 200 Whole reagent is changed to Pale blue. 〃
Hexane 1,000 The accuracy of readings is not affected. The accuracy of readings is
not affected.
Trichloroethylene 〃〃〃
Ethyl acetate 〃〃〃
0
100
50
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
iso-Pentyl alcohol
indicating value 〔ppm〕
50 100
Coexistence
Interference
0
100
50
Toluene〔ppm〕?
FIG.2 Influence of Toluene
iso-Pentyl alcohol
indicating value 〔ppm〕
500 1000
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
100 - - 100 80 70
80 - - 80 65 55
60 - 83 60 50 45
40 90 50 40 33 30
20 32 23 20 16 15
10 14 11 10 9 8
5 5 5 5 5 5

重囗味另类老妇| 久久精品人妻一区二区蜜桃| 宝贝∽好硬∽好爽一再...| 亚洲成a人片在线观看| 扯开她的腿狠狠占有np| you jizz jizz japan日本| 性xxxfreexxxx国产| 成人性做爰aaa片免费看曹查理| 曰本性l交片免费看| 男男黄gay片免费网站www| 特级真人做爰片| zoom与牛性胶zoom| 公的粗大挺进了我的密道| 成人av无码一区二区三区| 亚洲av无码乱码国产精品久久| old老太videos老妇| 三级蔷薇之恋| 农村艳妇疯狂做爰| 美味人妻2016| 色噜噜狠狠色综合av| 欧美《熟妇的荡欲》未删减版| 男朋友整根进去了但我没感觉 | chinesefree高潮抽搐| 内分泌失调怎么调整过来 | 被狼交的女人(h)| 中国成熟妇女毛茸茸| 成人性生交大片免费看| 国内精品久久久久影视老司机| 又粗又爽高潮午夜免费视频| 小舞被肉干高h潮文不断| 日本肉体xxxx裸交| 国产又黄又爽又猛免费视频播放 | 国产女人的高潮国语对白入口| 老外又硬又粗又长又大| 国产精品久久久久jk制服| 性熟妇videos另类hd| 女人被老外躁得好爽免费视频| 主人在调教室性调教女仆游戏| 女厕厕露p撒尿八个少妇| 啦啦啦中文免费视频高清观看| 三年片在线观看免费大全爱奇艺|