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1,4-二氧己環氣體檢測管139SB 1,4-DIOXANE (+) C4H8O2 0.05-2.5%。管道中氣流的流向及流速的檢測方法:使用時弄斷管子的兩端,把一頭插入吸耳球的入口,另一端置于待測管道處,然后輕捏吸耳球,管子的物質噴出,與空氣中水分反應,發出白煙。從而判斷待測管道中氣體流向及流速。
更新時間:2024-12-18
在線留言1,4-二氧己環氣體檢測管139SB 1,4-DIOXANE (+)C4H8O2 0.05-2.5%
Tube No.
1. PERFORMANCE
1) Measuring range :0.05-2.5%
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :10 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Reading :Graduations printed on the tube are calibrated by Methyl ethyl ketone at 2 pump
strokes and 1,4-Dioxane concentration is determined by using a conversion chart.
7) Colour change :Orange→Brownish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
Potassium dichromate is reduced.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1.2
1.4
1.0
0.8
0.6
0.4
0.2
0.1
0.05
0.01
%
139SB C 1, 4-DIOXANE
O O+Cr6++H2SO4→CH2CH2 Cr3+
CH2CH2
Substance Interference ppm Coexistence
Acetylene 3% Whole reagent is discoloured to
Brown.
Propane 0.2% 〃
Other organic or vapours
except Halogenated hydro- Similar stain is produced. Higher reading are given.
carbons
Dioxane(%)?
39SB Tube reading(%)?
(200mR)?
0.01
0.05
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.05
0.1
0.2
0.5
1.0
1.5
2.0
2.5
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