Bio diesel that meets the ASTM D 6751 and is legally registered with the British Environmental Protection Agency is a legal motor fuel for sale and distribution
Metrohm can offer a solution to many of the analytical requirements listed in European Standard EN14214, namely, oxidative stability Rancimat method, acid values potentiometric titration, iodine value, potentiometric titration, water content Karl Fischer and fuel grade rotational viscometers.
The Metrohm Rancimat 743 method for measuring the oxidative stability of the fatty methyl esters is determined according to DIN EN14112.
In this method the highly volatile organic acids produced by the autoxidation are absorbed in water and used to indicate induction time.
With the simple to use 743 Rancimat, the determination takes place at a highly sophisticated level.
The Rancimat 743 has eight measuring positions in two independent heating blocks, an independent start of analysis on each position, comprehensive control by PC, up to four Rancimat measuring blocks per PC (and therefore up to 32 samples at up to eight different temperatures) and an integrated GLP test.
As listed in European Standard EN14214, bio diesel manufacturers are required to determine acid value and iodine number by titration.
Using Metrohm autotitrators these methods have been perfected over the years and can be found in Metrohm Application Bulletin 141 'Analysis of edible oils and fats, iodine number' which is available from Metrohm UK free of charge.
