MATERIALS

Chemical and Reagents:
- GC Grade Nitrogen, hydrogen and air.
- Propylene glycol (CAS 57-55-6), Reagent grade
- Methanol (CAS 67-56-1)
- Sample

Instruments and Apparatus:
- 4ml Vials with Teflon-lined caps
- Gas Chromatograph equipped with Flame Ionization Detector (FID)
- Electronic integrator
- 10µl syringe
- Pipettes
- Volumetric flasks
- Electronic Balance

Gas Chromatography Conditions:

Injection size:	1 µL
Flow rates (mL/min)
Nitrogen (make-up):	30
Hydrogen (carrier):	2
Hydrogen (detector):	40
Air:	420
Temperatures (°C)
Injector:	200
Detector:	275
Column:	40 isothermal