Biodiesel quality was determined by measuring the following
fuel properties (respective analytical methods are in brackets): (i)
acid value (EN 14104), (ii) viscosity at 40 C (ASTM D445), (iii)
density (ASTM D4052), (iv) Ester content (EN 14103) (v) Mono-, di-,
triglyceride and glycerol content (EN 14105).