當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 143SB二甲苯C6H4(CH3)2氣體測毒管143SB XYLENE 5-200ppm
室內空氣甲醛檢測管No.713 FORMALDEHYDE 0.01-0
氯乙烯CH2=CHCl氣體測毒管132SC VINYL CHLORID
氯乙烯CH2=CHCl氣體檢知管132SB VINYL CHLORID
二甲苯C6H4(CH3)2氣體測毒管143SB XYLENE 5-200ppm
1. PERFORMANCE
1) Measuring range :5-200 ppm
Number of pump strokes 2(200mL)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :1 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :White→Brown
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Iodine pentoxide is reduced.
C6H4(CH3)2+I2O5+H2SO4→I2
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
- 80
100
200
- 60
- 40
- 30
- 20
- 10
- 5
ppm
(White)
DEHUMIDIFIER
C6H4 (CH3)2
Tube No.
143SB XYLENE
Substance ppm Interference Coexistence
Toluene Xylene conc.1/5 Same stain is produced. Higher reading are given.
Ethyl acetate The accuracy of readings is
not affected.
Methyl isobutyl ketone 〃
Isobutyl alcohol 〃
TEMPERATURE CORRECTION TABLE
Tube Corrected Concentration (ppm)
Readings 20℃ 30℃ 40℃
(ppm) (68°F) (86°F) (104°F)
200 200 300 -
150 150 190 400
100 100 125 150
80 80 100 120
60 60 70 80
40 40 45 50
30 30 30 30
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