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(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:2025-01-01

發(fā)郵件給我們:554328895@qq.com

分享到: 1
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

高密市| 通化县| 凤冈县| 娄底市| 邹城市| 齐齐哈尔市| 永丰县| 长兴县| 无极县| 富蕴县| 富源县| 柏乡县| 镇远县| 北辰区| 新晃| 彩票| 高要市| 重庆市| 汕头市| 宁城县| 龙海市| 康定县| 望谟县| 昭觉县| 阿城市| 东方市| 应用必备| 巴青县| 嵊州市| 通道| 三穗县| 梅河口市| 桃园县| 盐源县| 鄂尔多斯市| 加查县| 南宫市| 京山县| 南溪县| 共和县| 屏东县|