成人毛片无码一区二区三区,亚洲精品成人无码中文毛片,亚洲国产精品尤物yw在线观看,人妻互换精品一区二区

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>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:2025-01-15

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

亚洲色偷偷综合亚洲av78| 免费人做人爱视频| 国内精品卡一卡二卡三| 国产精品高潮呻吟久久av| 内射人妻少妇无码一本一道| 亚洲AV成人综合网| 最近国语中文mv在线观看| 99久久人人爽亚洲精品美女| 精品丝袜人妻久久久久久| 麻豆a片爽爽歪歪爽爽视频看看| 国产欧美精品123区发布| 无码人妻精品一区二区蜜桃网站| 欧美xxxx18性欧美| 午夜精品一区二区三区在线观看 | 精品无码av无码免费专区| 日本进口dvd播放器多少钱一部| 麻豆一区二区三区精品视频| 亚洲成AV人片高潮喷水| 成 人 A V免费视频在线观看| CAOPORN免费视频国产| 国产成人亚洲精品无码h在线| 国产一区二区三区乱码| 少妇特黄a一区二区三区| 久久九九久精品国产| 在线综合亚洲欧洲综合网站| 国产午夜无码福利在线看网站| 午夜无码伦费影视在线观看| 无遮挡A级毛片免费看| 久久九九久精品国产 | 4438XX亚洲最大五色丁香| 少妇aaa级久久久无码精品片| japanesexxxx日本69| 精品人妻无码区在线视频| 亚洲AV色香蕉一区二区三区蜜桃| 亚洲精品国产偷五月天丁香| 久久精品丝袜高跟鞋| 无限看片的视频高清在线| 亚洲av无一区二区三区久久\| 国产97色在线 | 日韩| 野花日本免费完整版高清版| 欧美一极xxxxx|