亚洲清纯唯美综合伊人色,大香蕉中码手机在线视频,欧美老黄片在线免费播放,亚洲午夜av一区二区三区

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>190U苯甲醛氣體檢測(cè)管 Benzaldehyde C6H5CHO 5-70ppm

苯甲醛氣體檢測(cè)管 Benzaldehyde C6H5CHO 5-70ppm

簡(jiǎn)要描述:

苯甲醛氣體檢測(cè)管 Benzaldehyde C6H5CHO 5-70ppm,ETHYL CELLOSOLVE,190U,

更新時(shí)間:2025-08-27

在線留言
苯甲醛氣體檢測(cè)管 Benzaldehyde C6H5CHO 5-70ppm

苯甲醛氣體檢測(cè)管 Benzaldehyde C6H5CHO 5-70ppm,ETHYL CELLOSOLVE,190U

Tube No.
0
30
40
50
20
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500
(300mR)? (100mR)?
0
300
400
500
200
100
1,1,1-Trichloroethane〔ppm〕?
FIG.2 Influence of 1,1,1-Trichloroethane
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
(300mR)?
1. PERFORMANCE
1) Measuring range :5-500 ppm
Number of pump strokes 3(300mr)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 ppm
4) Shelf life :2 years
5) Operating temperature :10~35℃
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:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
C2H5OCH2CH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
500
200
150
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
??
????
190U ETHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Ethers 〃〃
(Pmaroarfefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.2 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (80°F) (95°F)
500 800 620 500 410 335 265
400 620 490 400 325 260 200
300 450 365 300 245 195 145
200 290 245 200 160 125 95
150 215 185 150 120 90 70
100 145 125 100 80 60 45
50 75 65 50 40 30 25
20 30 25 20 15 12 10
5 10 7 5 4 3 2
www.r-biopharm.com.cn

在调教室强迫坐三角木小说| 久久精品女人Aⅴ综合免| 两根一起进去好紧好涨| 污污的网站| 亚洲av无码专区在线观看亚| 久久无人爱高潮喷水毛片| 国产精品久久久久久久A片冻果| 国产污网站在线观看15| 国产又爽又猛又粗的视频A片| 東京热AV精品人妻一区二区三区| 国产精品18久久久久vr| 国产精品jizz在线观看老狼| 国产欧美日韩视频在线一区| 无颜之月在线看| 亚洲日日做日日谢日日鲁| 欧美视频一区二区色哟哟| 欧美亚洲天堂一区二区三区| 导航h在线观看| 免费男女囗交视频在线观看| 亚洲第一 日韩av电影| 久9热精品视频在线播放| 午夜无码片在线观看影视| 欧美色欲久久精品鲁丝片| 成人亚洲av日韩av欧v| 中文字幕久久人妻熟人妻| 国产打屁股在线播放91| 国产精品九九99久久精品| 男捅女洞口视频在线观看| 亚洲乱码av中文一区二区| 久久综合九色综合久99| 欧美不卡视频在线免费观看| 国产成人精品一区二区三区| 欧美日韩精品一区在线不卡 | 无码国产a一级无码三区| 自拍偷自拍图片亚洲精品| 亚洲男人天堂aa男人皇宫| 欧美日韩加勒比在线观看| 久久久久久亚洲精品免费| 国产不带套露脸在线观看 | 久久人人妻人人爽人人爽| 国产精品无码一区二区|