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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
二氧化碳CO2氣體檢知管126SF Carbon dioxide 100-4000ppm
Tube 26SF
1. PERFORMANCE
1) Measuring range :100-2000 ppm 200-4000 ppm
Number of pump strokes 1(100ml) 1/2(50ml)
2) Sampling time :2 minutes/1 pump stroke
3) Detectable limit :5 ppm(100mr)
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Direct reading from the scale calibrated by 1 pump strokes
7) Colour change :Pink→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid:10% RSD-high:10%
3. CHEMICAL REACTION
CO2+2NaOH→Na2CO3+H2O
4. CALIBRATION OF THE TUBE
STANDARD GAS CYLINDER METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
2000
1800
1600
1400
1200
1000
500
300
100
ppm
126SF CARBON DIOXIDE
(NOTE)
In case of 1 /2 pump strokes, following formula is available for the actual concentration.
Actual concentration=2 ×Reading value
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