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乙苯C6H5C2H5气体检测管179S Ethyl benzene 10-500ppm,从构造上讲检测管基本上分三种类型:*种只有一个指示层,用以测定组分单一或干扰因素小的气体样品。第二种是在指示层前加有净化层或者转化层,分别用以消除干扰物质对测定的影响,或使被测物质与转化层试剂反应,产生新物质后再在指示层中予以测定。净化层或转化层通称为检测管“前层"。
更新时间:2025-02-06
在线留言乙苯C6H5C2H5气体检测管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
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% 〃
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