精品国产乱子伦一区二区三区,免费无码又色又爽的视频软件,亚洲AV无码成人精品区,99国产精品国产精品九九

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>210U乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

簡要描述:

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200ppm,主要用途:用作溶劑、稀釋劑,制造香精、化妝品、人造革、膠卷、火藥等。健康危害: 對眼及上呼吸道粘膜有刺激作用,可引起 結(jié)膜炎、鼻炎、咽喉炎等,重者伴有頭痛、嗜睡、胸悶、心悸、食欲不振、惡心、嘔吐等癥狀。皮膚長期接觸可致、皮炎或濕疹。有的可發(fā)生貧血和嗜酸性粒細(xì)胞增多。燃爆危險(xiǎn):本品易燃,具刺激性。

更新時(shí)間:2024-10-30

在線留言
乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測管210U PENTYL ACETATE 10-200ppm

Tube No.210U
1. PERFORMANCE
1) Measuring range :10-200 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :4 ppm
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Pale yellow→Pale blue(more than 20 ppm)
〃 →Dark brown(20 ppm or less)
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3CO2CH2(CH2)3CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
10
30
50
100
150
200
ppm
300ml
GAS To pump
DEHUMIDIFIER(White)
210U PENTYL ACETATE
Substance Interference Coexistence
Alcohols Similar or Blue stain is produced. Higher readings are given.
Esters 〃〃
Ketones 〃〃
Aliphatic hydrocarbons 〃〃
Aromatic hydrocarbons The accuracy of readings is not affected. Whole reagent is changed to Brown.
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 20℃ 30℃ 40℃
(ppm) (50°F) (68°F) (86°F) (104°F)
200 240 200 160 120
150 180 150 130 100
100 120 100 80 70
50 60 50 40 30
30 36 30 24 18
10 10 10 8 6

中文字幕人妻丝袜乱一区三区| 亚洲精品久久久无码| 无码高潮少妇毛多水多水免费| 亚洲日韩激情无码一区| 精品国产乱码久久久久久上海公司| 宝宝好涨水快流出来免费视频| 精品淑女少妇AV久久免费| 女の乳搾りです在线观看| 欧亚专线S码和W码的区别| 亚洲AV综合色区无码一区爱AV| 国产AV无遮挡喷水白浆桃花视频| 亚洲一区二区三区AV无码| 日本免费无码一区二区到五区| 久久精品国产亚洲AV忘忧草18| 精品一线二线三线精华液| 国产片和外国大片| 精品无码久久久久久久久| 少妇撒尿W搡BBB搡WBBB搡| 无码国产精品一区二区免费式直播| 偷偷鲁2020精品偷拍视频| 民工把我奶头掏出来了怎么办| 国产精品扒开腿做爽爽爽A片小说| 成人试看120秒体验区| 午夜香吻免费观看视频在线播放| 2012国语高清完整版在线观看| 全是肉的高H短篇BL| 四川少妇BBW搡BBBB槡BBBB| 中国丰满人妻VIDEOSHD| 日韩一区二区三区精品| 三年片在线观看免费观看大全| 夜夜爽夜夜叫夜夜高潮漏水| 久久日一线二线三线品牌| 久久天天躁狠狠躁夜夜AV| 国产免费av片在线无码免费看| 少妇大荫蒂被巨大爽爽大小说| 梁医生不可以季亭亭梁衍| 俄罗斯少妇性做爰片| 亚洲AV无码一区二区三区人| 翁与小莹浴室欢爱52章| 日本精品无码亚洲专区| 老熟女高潮喷水了|