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

日本va不卡一区二区三区| 中文字幕操一区二区三区| 日韩五十路熟女视频| 91黑丝操逼| 一级夫妻黄色录像| 丰满少妇2中文在线观看| 非洲人与性动交ccoo| 秋霞伦理久久久| 欧美日韩国产综合另类| 久久久中文字幕一区二区| 亚洲福利欧美日韩午夜一区| 日韩A级特黄无码免费看| 插进去视频在线观看免费| 亚洲精品天堂久久久无码| 日韩精品国产一区二区三区久久| 久久逼逼网| 成人性生交大片100部| 色吊丝中文字幕资源在线| 欧美一区二区性放荡片| 极品美妇后花庭翘臀娇吟视频| 蝌蚪视频app| 亚洲国产欧美一区二区丝袜黑人 | 好吊色欧美一区二区三区视频| 国产精品久久久久久亚洲影| 护士做爰取精视频| 人妻少妇偷人精品店久久| 无码专区一va亚洲v专| 大香蕉三级片电影| 精品国产18久久久久久依依影院 | 国模av一区| jiujiuse国产精品| 97天天拍天天爱天天爽| 叫床三级做爰高清视频在线| 欧美一区二区三区啪啪| 最近日本字幕mv高清在线| 青青操图片在线观看视频| 人妻另类在线| 777熟女色| 少妇粉嫩小泬喷水视频www| 日韩精品无码综合福利网| 亚洲免费看黄片av大全|