Foreign Matter
Determination of Foreign Matter
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Whataap no.9648756003,9936213813
FOOD SAFETY AND STANDARDS AUTHORITY OF INDIA MINISTRY OF HEALTH AND FAMILY WELFARE GOVERNMENT OF INDIA
NEW DELHI 2018
CEREAL AND CEREAL PRODUCTS
1.2 DETERMINATION OF FOREIGN MATTER
Determine foreign matter by transferring 500 gm of the sample over the set of sieves arranged in such a way that the sieve with the largest perforation comes at the top and those with smaller perforations are placed in the descending order of their sizes and the solid pan at the bottom. Agitate the sample thoroughly to strain out the foreign matter at various levels. As a result of this straining, other food grains and foreign matter like bold pieces of clay, chaff etc shall remain on the first three sieves according to their sizes. The top most sieve would contain bold grains, big pieces of clay and other big sized foreign matter, while the lower sieves would contain smaller, shriveled andbadly insect damaged grains and smaller foreign matter. Separate the sieves after straining and pick up all foreign matter and add it to the foreign matter collected on the bottom pan. Weigh the total foreign matter of the bottom pan and calculate the percentage.
In the case of rice, millets and smaller sized grains the quantity of sample for test should be 250 gm.
For the purpose of reducing the quantity of test sample, spread the entire sample in a tray, divide it into four equal portions, collect two opposite quarters and repeat this process till the required quantity of sample is collected.
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