韩国三级中文字幕hd久久精品,国厂偷拍,精品国内自产拍在线观看,冷傲总裁被肉到失禁h

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>113SB正己烷CH3(CH2)4CH3氣體檢知管113SB n-HEXANE 50-1400ppm

正己烷CH3(CH2)4CH3氣體檢知管113SB n-HEXANE 50-1400ppm

簡要描述:

正己烷CH3(CH2)4CH3氣體檢知管113SB n-HEXANE 50-1400ppm,侵入途徑:吸入、食入、經(jīng)皮吸收。健康危害:本品有麻醉和刺激作用。長期接觸可致周圍神經(jīng)炎。急性中毒:吸入高濃度本品出現(xiàn)頭痛、頭暈、惡心、共濟(jì)失調(diào)等,重者引起神志喪失甚至死亡。對眼和上呼吸道有刺激性。

更新時(shí)間:2025-10-29

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
正己烷CH3(CH2)4CH3氣體檢知管113SB n-HEXANE 50-1400ppm

正己烷CH3(CH2)4CH3氣體檢知管113SB n-HEXANE 50-1400ppm

Tube 13SB

1. PERFORMANCE
1) Measuring range :50-1400 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Orange→Yellowish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3(CH2)4CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1400
1200
1000
800
600
400
200
100
50
ppm
????
????
113SB n-HEXANE
Substance Interference Coexistence
Aromatic hydrocarbons FIG.1,2 Black stain is produced. Higher readings are given.
Paraffin (morefi nth haynd Cro3c)arbons Similar stain is produced. 〃
In presence of Alcohols, Ketones or Esters less than 6%, the accuracy of readings is not affected.
0
500
 Benzene〔ppm〕?
FIG.1 Influence of Benzene
n-Hexane indicating value 〔ppm〕
50 100 0
500
 Toluene〔ppm〕?
FIG.2 Influence of Toluene
n-Hexane indicating value 〔ppm〕 100 150 50
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
1,400 1,730 1,530 1,400 1,270 1,180
1,200 1,470 1,320 1,200 1,090 1,010
1,000 1,230 1,100 1,000 910 840
800 980 870 800 720 670
600 740 660 600 550 500
400 470 430 400 360 330
200 220 210 200 180 170

99精品视频久久精品视频| 日本色道久久| 亚洲国产成人一区二区在线| av岛国片在线观看| 亚洲精品久久久国产极品| 99er精品尤物视频在线| 国产igao激情在线视频入口| henhenluxiaoshuo| 极品少妇被猛得白浆直流草莓视频| 久久久快播| 亚洲成年人电影在线观看| 晨勃+腿交+h男男| 中文字幕56页| 少妇荡乳欲伦交换a片欧美| 五月天在线超碰亚洲国产| 香港男同志gayhd完整版| 亚洲精品欧美日韩中文字幕| 国产午夜高潮熟女精品视频| 免费观看一级特黄视频| 国产51精品入口豆花| 五月天天天开心激情网站| 婷丁香| 天堂成人免费av电影一区| 午夜欧美日韩精品一区二区| 熟女少妇欧美| 国产三级视频在线2022| 竹夫人在线观看| 亚洲人女同志| 精品国产一区二区三区二区| 自拍偷拍欧美专区| 极品AV88| 久久久亚洲熟妇熟女电影| 红色高跟鞋韩剧免费观看完整版 | 精品人妻又粗又大又爽| 久久久久久久久久久黄片| 国产亚洲一区区二区在线| 国产色视频一区二区三区qq号| 岛国大尺度做爰未删减| 美女一区三区| 久久婷婷色一区二区三区asmr| 国产成人精品亚洲日本在线观看|