環氧丙烷氣體檢測管163SA PROPYLENE OXIDE 0.05-5.0%

Tube 63SA
1. PERFORMANCE
1） Measuring range ：1.0-5.0％ 0.05-3.0％
Number of pump strokes 1/2（50ml） 1（100ml）
2） Sampling time ：1.5 minutes/1 pump stroke
3） Detectable limit ：20 ppm
4） Shelf life ：3 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：Orange→Dark brown
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：5％　RSD-high：5％
3. CHEMICAL REACTION
Potassium dichromate is reduced.
CH3CHCH2O＋Cr6＋＋H2SO4→Cr3＋
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
3.0
2.5
2.0
1.5
1.0
0.5
0.2
0.05
0.1
%
GAS To pump
DEHUMIDIFIER
（White）
163SA PROPYLENE OXIDE
0
2
3
1
Toluene〔％〕?
FIG.1 Influence of Toluene
Propylene oxide indicating value 〔％〕
0.25 0.5
Interference
0.05
0.1
0.2
0.5
1.0
1.5
2.0
2.5
3.0
5.0
4.0
3.0
2.0
1.0
Conversion scale
（50mR actual value）?
（100mR concentration scale）?
（％）?
0
2
3
1
Ethyl acetate〔％〕?
FIG.2 Influence of Ethyl acetate
Propylene oxide indicating value 〔％〕
1 2 0
2
3
1
Methanol〔％〕?
FIG.3 Influence of Methanol
Propylene oxide indicating value 〔％〕
0.5 1.0
Substance Interference ppm Coexistence
Aromatic hydrocarbons FIG.1 Similar stain is produced. Higher readings are given.
Esters FIG.2 〃〃
Ketones 〃〃
Alcohols FIG.3 〃〃
Halogenated hydrocarbons WBrhoowlen .reagent is changed to 0.5％ 〃
（NOTE）
In case of 1 / 2 pump strokes, following conversion scale is available for actual concentration.