亚洲熟妇少妇任你躁在线观看,把极品白丝老师啪到腿软,性按摩XXXX在线观看,律师事务所在线咨询免费

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(cè)管>氣體快速檢測(cè)管>210U乙酸戊酯CH3CO2(CH2)4CH3氣體檢測(cè)管210U PENTYL ACETATE 10-200

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

簡(jiǎn)要描述:

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測(cè)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(duì)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(zhǎng)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:2024-11-20

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

乙酸戊酯CH3CO2(CH2)4CH3氣體檢測(cè)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

无需付费真人直播视频| 亚洲丰满爆乳熟女在线观看| 凹凸精品视频视频学生AV| 宝贝别忍着喷出来嗯啊哦漫画 | 警察被两个混混脱裤玩j视频| 公么大龟弄得我好舒服秀婷视频| 亚洲AV无码乱码国产精品| 久久精品国产亚洲av香蕉| 国产女人的高潮国语对白入口| 免费播看高清大片免播放器一| 100国产精品人妻无码| 波多野结衣乳巨码无在线观看 | 下面一进一出好爽视频| 中文字幕丰满孑伦无码精品| 蜜桃AV无码免费看永久| 免费又黄又爽又猛的毛片| 欧美十大艳星| 久久午夜夜伦鲁鲁片无码免费| 麻豆视传媒短视频免费网站| 护士趴下光屁股翘臀被打的作文 | 锵锵锵锵锵锵锵好大好深| 亚洲综合伊人无码久久日日| 日日摸日日踫夜夜爽无码久久 | 亚洲AV第一成肉网| 久久久久无码精品亚洲日韩| 三上悠亚av作品在线观看| 又硬又粗又大又爽时间持久| 粗大黑头紫大黑头紫挤进| 狠狠色综合网久久久久久| 日韩电影免费在线观看网站| 人妻无码一区二区三区TV| 97久久精品人人槡人妻人| 我和亲妺在火车上做了| 全文辣肉h短篇春野小农民| 色婷婷国产精品视频一区二区三区| 亚洲国产精品久久久久秋霞影院| 久久精品国产亚洲av香蕉高清| 国产探花在线精品一区二区| YIN乱童话集| 久久99亚洲精品久久久久| 啊灬啊别停灬用力啊村妇|