亚洲爆乳无码一区二区三区,国产AV在线一区二区三区,强开小婷嫩苞又嫩又紧视频,97精品人人A片免费看

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,

更新時間:2024-11-20

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

影音先锋女人AV鲁色资源网久久| 国产AV在线播放| 日本亲与子乱人妻IHD| 久爱99爱九九AV视频在线| 精品人体无码一区二区三区| 中文在线无码高潮潮喷在线播放| 99国产精品久久久久久久成人| 少妇人妻偷人精品一区二区 | 亚洲国产成人片在线观看| 成人精品一区二区三区不卡免费看| 老师家里没人你用点力视频| 入戏太深动漫未删减在线观看| 中文字幕在线观看| 精品人妻无码一区二区三区下载| 国产精品一区二区| 精品综合久久久久久98| 朋友人妻翘臀迎接粗大撞击| 中文无码一区二区不卡ΑV| 少妇BBW搡BBBB搡| 男男GV白嫩小受GV在线播放| 亚洲精品一区二区三区福利| 97超碰A片人人爽人人澡97| 边啃奶头边躁狠狠躁AV| 国产成人夜色高潮福利APP | 穿这么少不就是给人C的| 日日噜狠狠噜天天噜AV| 久久99精品久久久久久水蜜桃| 久久亚洲国产成人精品性色| 没带罩子让他捏了一节课| 久久久欧美国产精品人妻噜噜 | 欧美人与牲动交XXXX| 狠狠躁18三区二区一区| 人妻无码视频一区二区三区| 免费观看高清视频的软件| 亚洲国产精品无码久久一区二区 | 中文在线А√天堂| 老头边吃奶边挵进去呻吟| 久久久久亚洲AV无码专区首JN| 夜夜高潮夜夜爽夜夜爱爱一区 | 51国产黑色丝袜高跟鞋| 久久青青无码亚洲AV黑人 |