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>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>190U苯甲醛氣體檢測管 Benzaldehyde C6H5CHO 5-70ppm

苯甲醛氣體檢測管 Benzaldehyde C6H5CHO 5-70ppm

簡要描述:

苯甲醛氣體檢測管 Benzaldehyde C6H5CHO 5-70ppm,ETHYL CELLOSOLVE,190U,

更新時(shí)間:2025-01-15

在線留言
苯甲醛氣體檢測管 Benzaldehyde C6H5CHO 5-70ppm

苯甲醛氣體檢測管 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

男人和女人亲吻视频| 边做饭边被躁bd中文字幕| 亚洲hairy多毛pics大全| 久久久久久亚洲精品无码| 人妻少妇伦在线电影| 国产女人乱人伦精品一区二区| 无码精品人妻一区二区三区人妻斩| 花蝴蝶日本视频中文| 欧美大片免费流量| 内射人妻少妇无码一本一道| 免费视频成人片在线观看| 精品国产三级在线观看| 亚洲av永久无码精品三区在线 | 久久婷婷五月综合色精品| 一边摸一边抽搐一进一出视频| 国产亚洲精品久久久久久无码下载| 亚洲国产无线码在线观看| 精品久久人人做人人爽综合| 女人三a级毛片视频| 《色诱女教师》在线观看 | 欧美裸体xxxx极品少妇| 免费无码又色又爽的视频软件| 精品人妻一区二区三区四区| 婬荡少妇21p| 亚洲国产婷婷六月丁香| 日本熟妇色XXXXX日本免费看| 久久人人爽人人爽人人片av麻烦 | 欧美zc00o人与善交| 国产成人精品热玖玖玖| 日本在线 | 中文| 老牛嫩草一区二区三区| 日韩精品久久无码中文字幕| 男人添女人下部高潮全视频| 午夜福利免视频100集2019| 亚洲国产精品sss在线观看av| 国产真实强被迫伦姧女在线观看| 18成禁人10000视频免费| 日韩性做爰免费a片aa片| 久别的草原在线影院电影观看中文| 欧美熟妇XXXXX欧美老妇不卡| 人妻在线日韩免费视频|