久久久久久精品成人免费图片,(原创)露脸自拍[62p],免费60分钟床,国内最真实的xxxx人伦

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:2025-01-08

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

女人被狂躁c到高潮视频| 久久精品丝袜高跟鞋| 日本三级片电影| 永久免费观看不收费的软件5| 女女互揉吃奶揉到高潮视频| 香港三级日本三级妇三级| 国产av一区二区三区日韩| 欧美国产高清欧美内衣办| 我美艳丰满的吗咪| 99e久热只有精品8在线直播 | 天天躁恨恨躁夜躁2020| 娜娜的yin荡生涯h全文| 色哟哟视频免费入口在线看| 两个人免费视频高清播放| 成品人视频推荐素材网站| 真人性做爰直播| 深闺禁伦强hnp| 年轻的小婊2韩剧中文版| 一本一道波多野结衣av视频| 国产手机在线精品| 99re热这里只有精品| 国产精品第一页| 教子做爰xxxx| 巨大乳尖奶怀孕| 前夫的东西很大和三个人在一起| 久久婷婷五月国产色综合 | 狠狠躁天天躁夜夜躁婷婷| 国内最真实的xxxx人伦| 日韩大片高清播放器| 国产又色又爽又高潮免费| 国产精品久久久久无码av色戒| juliaann精品艳妇| 欧美老熟妇又粗又大| 婷婷色婷婷开心五月四房播播| 韩国高清大片免费观看在线| 久久久久亚洲av无码a片| 色婷婷亚洲一区二区三区| 日韩精品无码一本二本三本色| 我和小娻孑在卧室做了| 性高湖久久久久久久久aaaaa| 攻调教受扩张尿孔折磨失禁文|