国产日韩欧美_国产亚洲一卡2卡3卡4卡网站_国产亚洲精品综合网在线观看_国产亚洲成AⅤ人片在线奶水_国产下药迷倒白嫩美女在线_国产午夜精品一区二E1_日本国产制服丝袜一区

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丁烯醛CH3CH=CHCHO氣體檢測管190U ETHYL CELLOSOLVE 2-40ppm

丁烯醛CH3CH=CHCHO氣體檢測管190U ETHYL CELLOSOLVE 2-40ppm

簡要描述:

巴豆醛Crotonaldehyde丁烯醛CH3CH=CHCHO學(xué)名β-甲基丙烯醛,190U ETHYL CELLOSOLVE (+) 2-40ppm 臭氧氣體檢測管(檢測范圍:4-400ppm、0.025-3ppm)、手動采樣器、5米延長采樣管、便攜式儀器箱。總計3980元/套。水中臭氧快速檢測管(檢測范圍:1-10mg/L),只需325元即可對水中的殘留臭氧進(jìn)行快速檢測。

更新時間:2025-01-08

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
丁烯醛CH3CH=CHCHO氣體檢測管190U ETHYL CELLOSOLVE 2-40ppm

丁烯醛CH3CH=CHCHO氣體檢測管190U ETHYL CELLOSOLVE 2-40ppm

Tube 90U
0
30
40
50
20
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500
(300ml)? (100ml)?
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(300ml)
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

哈巴河县| 资中县| 确山县| 定结县| 临江市| 安福县| 平凉市| 马关县| 敦煌市| 高尔夫| 本溪市| 黑龙江省| 泗洪县| 新余市| 南阳市| 岳阳县| 青河县| 阿瓦提县| 丰台区| 石台县| 双城市| 和平县| 区。| 玉林市| 赤壁市| 鄢陵县| 天柱县| 株洲市| 亚东县| 富平县| 建水县| 东平县| 平乡县| 龙州县| 杭锦旗| 四会市| 莫力| 株洲县| 泰顺县| 泸西县| 奉节县|