亚洲中文字幕啪啪一区二区,看亚洲欧洲在线视频,国产福利不卡在线视频,欧美日韩一区二区人妻

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>190U1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測(cè)管190U 4-100ppm

1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測(cè)管190U 4-100ppm

簡(jiǎn)要描述:

1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測(cè)管,1,1,2,2-Tetrabromoethane 4-100ppm,別名:四溴化乙炔,英文名稱 1,1,2,2-Tetrabromoethane;Acetylene tetrabromide,分子式 C2H2Br4;Br2HCCHBr2,健康危害:對(duì)中樞神經(jīng)系統(tǒng)有抑制作用,對(duì)呼吸道有刺激作用,可引起肝、腎損害及單核細(xì)胞增多,可引起皮炎。

更新時(shí)間:2024-11-13

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測(cè)管190U 4-100ppm

1,1,2,2-四溴乙烷CHBr2CHBr2氣體檢測(cè)管190U 4-100ppm

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
(300ml)?
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

乐山市| 威海市| 嘉荫县| 西昌市| 永顺县| 松溪县| 西华县| 东方市| 北宁市| 濮阳市| 张掖市| 长顺县| 远安县| 甘泉县| 雅江县| 松原市| 彩票| 马鞍山市| 长寿区| 海城市| 浪卡子县| 泌阳县| 咸阳市| 基隆市| 博客| 龙山县| 大宁县| 杭锦旗| 调兵山市| 白朗县| 贵港市| 宁阳县| 虎林市| 卢氏县| 通山县| 紫金县| 门源| 东乡族自治县| 巴里| 宜丰县| 公主岭市|