Measuring physio chemical properties of oil : iodine value, acid value, sanctification, peroxide value fatty acid methyl esters in oil to check adulteration. microbial screening for the following parameters: enumeration: total viable count (total coliforms e.coli enterobacteriaceae staph. Aureus)staining: gram positive gram negative (bacillus yeast and mold anaerobes)pathogen screening: salmonella e.coli 0157 listeria listeria monocytogenes campylobacter staph enterotoxins: sterility testing: aerobic anaerobic bacteria and fungi lactic acid bacteria