S.L. 437.67 Art. 8to crush as follows. g or more of as indicated in (3.1) and mix. containing stone by glass fragments of Distil off the 5.1. Eliminate residue to a sulfate) and Calculate following (10 a + b) where: a = mass in extract), b = mass in 8.2. For 8.3. Pet anhydrous 8.4. In water to wash 8.5. The Excessive

Observations

8.1. For products with a high content of oils and fats, which are difficult or unsuitable for drawing a homogeneous reduced test sample, proceed

Weigh 20 g of the sample to the nearest 1 mg and mix with 10 anhydrous sodium sulfate (3.2). Extract with light petroleum (3.1) point 5.1. Make up the extract obtained to 500 ml with light petroleum Take 50 ml of the solution and place in a small, dry, weighed flask

*Where the oil or fat has to undergo subsequent quality tests, replace the fragments of pumice beads. pumice stone*.

solvent, dry and proceed as indicated in the last paragraph of point the solvent from the extraction residue left in the thimble, crush the fineness of 1 mm, return it to the extraction thimble (do not add sodium proceed as indicated in the second and third paragraphs of point 5.1. the content of oils and fats as a percentage of the sample by using the formula: × 5

grams of the residue after the first extraction (aliquot part of the grams of the residue after the second extraction. products low in oils and fats the test sample may be increased to 5 g.

foods containing a high content of water may need to be mixed with sodium sulfate prior to hydrolysis and extraction as per Procedure B.

paragraph 5.2 it may be more effective to use hot water in place of cold the residue after filtration.

drying time of 1,5 h may need to be extended for some feedingstuffs. drying should be avoided as this can lead to low results. A microwave be used. Pre-extraction by Procedure A prior to hydrolysis and re-extraction by is recommended if the crude oil`fat content is greater than 15%. To this depends on the nature of the feedingstuff and the nature of the oil-feedingstuff.

fat has to undergo subsequent quality tests, replace the fragments of pumice stone by glass