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

丙酮?dú)怏w檢測(cè)管102SD ACETONE 20-200ppm

簡(jiǎn)要描述:

丙酮?dú)怏w檢測(cè)管102SD ACETONE (-) p-Cymene CH3C6H4CH(CH3)2 20-200ppm,環(huán)境監(jiān)測(cè)站近日從我公司購(gòu)入一套惡臭氣體應(yīng)急檢測(cè)箱,用于檢測(cè)各種場(chǎng)合大氣中的惡臭氣體和臭氣濃度。這一儀器將替代國(guó)標(biāo)“三點(diǎn)式臭袋法",其檢測(cè)效果等同于“三點(diǎn)式臭袋法",而檢測(cè)效率將獲明顯提升。

更新時(shí)間:2025-10-28

發(fā)郵件給我們:554328895@qq.com

分享到: 1
在線留言
丙酮?dú)怏w檢測(cè)管102SD ACETONE 20-200ppm

丙酮?dú)怏w檢測(cè)管102SD ACETONE 20-200ppm

Tube 02SD
1. PERFORMANCE
1) Measuring range :125-5,000 ppm 50-2,000 ppm 20-800 ppm
Number of pump strokes 1 / 2(50mL) 1(100mL ) 2(200mL)
2) Sampling time :1.5 minutes / 1 pump stroke
3) Detectable limit :10 ppm(200mL)
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 :Yellow→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low :10 % RSD-mid.:5 % RSD-high :5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH 3COCH 3+Cr6++H 2SO 4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
102SD ACETONE
Substance Interference Coexistence
Alcohols Brown stain is produced. Higher readings are given.
Other Ketones 〃〃
Esters 〃〃
Aromatic hydrocarbons 〃〃
Paraffin hydrocarbons
If the top of discoloured
layer is possible to read,
the accuracy of readings is
not affected.

(more than C )
Halogenated hydrocarbons 〃〃
(NOTE)
In case of 1 / 2 or 2 pump strokes, following formula is available for the actual concentration.
1 / 2 stroke:s Actual concentration = 2.5 ×Temperature corrected value
2 stroke:s Actual concentration = 0.4 ×Temperature corrected value
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0 ℃ 10 ℃ 20 ℃ 30 ℃ 40 ℃
(ppm) (32 °F) (50 °F) (68 °F) (86 °F) (104°F)
2,000 3,500 2,800 2,000 1,600 1,300
1,500 2,750 2,000 1,500 1,250 1,000
800 1,300 1,000 800 700 600
600 1,000 800 600 550 450
400 650 500 400 350 300
200 300 200 200 200 200
100 200 100 100 100 100
:
:
50 100 50 50 50 50
1,000 1,670 1,250 1,000 850 700
GAS To pump
DEHUMIDIFIER
(White)
3
www.r-biopharm.com.cn

麻豆xxx乱女少妇精品潘甜甜| 日本少妇bbbb爽爽bbb美| 7799天天综合网精品| 欧美精品大香伊蕉在人线| 亚洲永久无3D动漫一区| 一边揉一边插| 激情 国产| Chinese老头树林偷拍一| 国产精品18禁污污网站| 欧美专区不卡| 国产一级黄色生活片| 操老岳熟妇女国产熟女| 成人精品3d动漫在线观看| 人妻天天爽夜夜爽天天澡| 一区二区三区97| 国产瑜伽XXX91在线| 一级片中文字幕在线观看| 露脸啪啪AV片| 丝袜 中出 制服 人妻 美腿 | 国产女主播福利一区二区| 日本欧美精品成人久久久| 老牛影视在线一区二观看| aSS少妇aSS少妇| 日韩av小黄片在线播放| 中出老熟妇| 欧美aaaaaa午夜精品| 中文字幕人成无码人妻| 亚洲淫区| 国产精品手机观看| 老熟妇大胆性开放图| 无码精品动漫在线观看的| 中国BBBBXXXX| 韩国一级毛片中文字幕| 在直播在线直播| 在线观看亚洲一区二区三区| 久久99热成人精品国产| 午夜精品久久久久久不卡欧美一级| 亚洲情瑟| 公车上疯狂高潮呻吟摸揉| xxxx喷水| 国产在线91|