All Answers (9) 1  Hi Dhamodharan, 2  Thank you Mr. Oded Nir. 3  Here are two recent publications. 4  The second Source Available from: Tobias Hey. 5  Hi Dr. Henrik Andersen, Thanks for sharing. 6  Hello Everyone, I would Like to know that whether Is there any simple procedure for estimating the Volatile Fatty acids in the given sample. I need a procedure which is very simple and which can be done by simple glass wares and instruments like Ph meter and burettes. I am not able to remember the procedure.