亚洲精品一区二区三区中文字幕,23部禽亲女小丹慢慢张开双,妺妺窝人体色www在线下载,xxxx丰满小少妇女高潮

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

女公浴室xxx偷窃www| 精品国产亚洲av麻豆| 美国式禁忌在线观看| 我在ktv被六个男人玩一晚上| 亚洲熟伦熟女专区| 少妇伦子伦精品无码| 哦┅┅快┅┅用力啊┅┅小说| 无码人妻丰满熟妇啪啪网站牛牛 | 蜜臀久久精品久久久久酒店| 麻豆国产传媒61国产av| 教官脔到她哭h粗话h好爽视频 | 女人与公拘交酡zozo| 黄瓜视频下载| 玩弄老太婆bbw视频| 国产成人精品三级麻豆| 日韩内射美女人妻一区二区三区| 国产精品毛片大码女人| 精品无码国产一区二区三区51安 | 狠狠色噜噜狠狠狠狠色综合久| 欧美肥胖老太玩黑人| 亚洲精品无码久久久久久| 破處女特級a片在线观看| 金瓶悔1一5扬思敏完整版| 国模吧无码一区二区三区| 色欲久久99精品久久久久久av| 亚洲精品国产精品国自产| 最近韩国日本免费高清观看| 久久精品中文字幕| 你懂的电影| 老熟女重囗味hdxx70星空 | 亚洲精品乱码久久久久久自慰| 亚洲日本va中文字幕无码| free欧美性xxxxhd| 男女啪啪流出白色液体| 在厨房抱住岳丰满大屁股| 精品久久久久| 粉红理论泰剧| 粉嫩xb粉嫩xb粉嫩xb| 军人的粗大h拔不出来| jk女神自慰流白浆呻吟av| 国产一区二区精品久久岳|