Gastec 113LL 快速异丙醇检测管C3H7OH(20~460 ppm)

Indicator: 20 to 200 ppm
Measuring Range: 
+ 20 to 200 ppm, Number of Pump Strokes 2
+ 200 to 460 ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: Pink → Pale blue
Reaction Principle: CH3CH(OH)CH3 + Cr6++ H2SO4 → Cr3+
Coefficient of Variation: 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Performance
Measuring Range
20 to 200 ppm 200 to 460 ppm
Number of Pump Strokes
2 1
Correction Factor
1 2.3
Sampling Time 2 minutes per pump stroke
Detecting Limit 7 ppm (n=2)
Colour Change Pink → Pale blue
Reaction Principle CH3CH(OH)CH3 + Cr6++ H2SO4 → Cr3+
Coefficient of Variation 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
Shelf Life 2 Years
Corrections for temperature & humidity Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Alcohols   + Pale blue
Esters,Ketones   No No
Aliphatic hydrocarbon   No No
Aromatic hydrocarbon   No No
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Propyl alcohol by scale 2 55 to 170 ppm
Ethylene glycol MBE by scale 2 60 to 400 ppm
Ethylene glycol MEE 2.3 2 46 to 460 ppm
Ethylene glycol MME 2.2 2 44 to 440 ppm
1-Methoxy-2-propanol 1.3 2 26 to 260 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
200 ppm (2014) 400 ppm (2014) 2 to 12.7%
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