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Gastec 92M Quick-measuring Detector tubes Acetaldehyde CH3CHO (2.5~100ppm)

  • Manufacturer: Gastec
    Model: CH3CHO92M
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  • 40.00
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Manufacture: Gastec
Model: 92M
Origin: Japan

Indicator: 5~ 100 ppm
Measuring Range:
+ 2.5 ~ 5 ppm, 2 Number of Pump Strokes
+ 5 ~ 100 ppm, 1 Number of Pump Strokes
Sampling Time: 1 minute per pump stroke
Colour Change: Yellow → Red
Reaction Principle: 3CH3CHO + (NH2OH)3H3PO4 → H3PO4, H3PO4 + Base → Phosphate
Coefficient of Variation: 10% (5 ~ 20 ppm), 5% (20 ~ 100 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Store the tubes: 10ºC or below

Detail

Catalog

Manual tube

Manual

Performance
Measuring Range
2.5 to 5 ppm 5 to 100 ppm
Number of Pump Strokes
2 1
Correction Factor
1/2 1
Sampling Time 1 minute per pump stroke
Detecting Limit 0.25 ppm (n=2)
Colour Change Yellow → Red
Reaction Principle 3CH3CHO + (NH2OH)3H3PO4 → H3PO4
H3PO4 + Base → Phosphate
Coefficient of Variation 10% (for 5 to 20 ppm), 5% (for 20 to 100 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Unnecessary
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Ammonia   No
Acrolein 3/5 times + Red
Acetone 2 times + Red
Methyl ethyl ketone 6 times + Red
MIBK 10 times + Red
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
- C 25 ppm 4 to 60%

 

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