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首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>190U二丙酮醇?xì)怏w檢測(cè)管190U DIACETONE ALCOHOL 10-250ppm

二丙酮醇?xì)怏w檢測(cè)管190U DIACETONE ALCOHOL 10-250ppm

簡(jiǎn)要描述:

二丙酮醇又名雙丙酮醇 DIACETONE ALCOHOL 英文簡(jiǎn)稱(chēng)DAA,190U DIACETONE ALCOHOL (+) 10-250ppm (CH3)2C(OH)CH2COCH3,二丙酮醇?xì)怏w檢測(cè)管190U DIACETONE ALCOHOL 10-250ppm,一種聯(lián)管式氣體檢測(cè)管,它屬于氣體快速檢測(cè)裝置,該檢測(cè)管的結(jié)構(gòu)是在玻璃管內(nèi)填充兩種不同的被測(cè)氣體指示粉,指示粉由載體和反應(yīng)劑混合而成,載體可以選擇石英砂、硅膠、玻璃粉等,玻璃管外壁對(duì)應(yīng)于兩種不同的指示粉部位分別標(biāo)有表明被測(cè)氣體濃度

更新時(shí)間:2025-01-08

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二丙酮醇?xì)怏w檢測(cè)管190U DIACETONE ALCOHOL 10-250ppm

二丙酮醇?xì)怏w檢測(cè)管190U DIACETONE ALCOHOL 10-250ppm

1. PERFORMANCE
1) Measuring range :10-250 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :1 ppm
4) Shelf life :2 years
5) Operating temperature :10~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Ethyl cellosolve at 3 pump strokes
and Diacetone alcohol concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Chromium oxide is reduced.
(CH3)2C(OH)CH2COCH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
200
150
500
400
300
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
Tube No.
DIACETONE ALCOHOL
92
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Halogenated hydrocarbons 〃
Aliphatic hydrocarbons Whole reagent is discoloured to It the top of Pale blue stain is clear,the
Pale brown. accuracy of readings is not affected.
Aromatic hydrocarbons 〃〃
Esters 〃〃
0
20
30
40
50
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Diacetone indicating value 〔ppm〕
50 100
Coexistence
Interference
Diacetone alcohol(ppm)?
90U Tube reading(ppm)

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