乙苯C6H5C2H5氣體檢測管179S Ethyl benzene 10-500ppm 返回列表頁

乙苯C6H5C2H5氣體檢測管179S Ethyl benzene 10-500ppm

Tube 79S

1. PERFORMANCE
1） Measuring range ：10-500 ppm
Number of pump strokes 1（100ml）
2） Sampling time ：2 minutes/1 pump stroke
3） Detectable limit ：2 ppm
4） Shelf life ：1.5 years
5） Operating temperature ：0～40℃
6） Reading ：Direct reading from the scale calibrated by 1 pump stroke
7） Colour change ：White→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low：10％　RSD-mid.：10％　RSD-high：5％
3. CHEMICAL REACTION
Iodine pentoxide is reduced.
C6H5C2H5＋I2O5＋H2SO4→I2
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
300
200
100
50
10
ppm
100ml
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179S ETHYL BENZENE
Substance Interference ppm Coexistence
Benzene Similar stain is produced. 10 Higher readings are given.
Toluene 〃25 〃
Xylene 〃50 〃
Methanol Tafhfeec atecdc.uracy of readings is not 1％ 〃
Hexane Pale brown stain is produced. 0.1％ 〃