foreign matter

foreign matter

[′fär·ən ‚mad·ər]
(science and technology)
Any substance not belonging naturally in the place where found.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in classic literature ?
Pretending to read a smeary newspaper long out of date, which had nothing half so legible in its local news, as the foreign matter of coffee, pickles, fish-sauces, gravy, melted butter, and wine, with which it was sprinkled all over, as if it had taken the measles in a highly irregular form, I sat at my table while he stood before the fire.
Meeting my betrothed in an avenue thronged with the élite of the city, I was hastening to greet her with one of my best considered bows, when a small particle of some foreign matter, lodging in the corner of my eye, rendered me, for the moment, completely blind.
Weakened in mind by his frequent losses of this instrument, and its determination not to stick in his eye, and more and more enfeebled in intellect every time he looked at the mysterious Clennam, he applied spoons to his eyes, forks, and other foreign matters connected with the furniture of the dinner-table.
In June, the Perrigo Company had to recall its (https://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/perrigo-issues-voluntary-recall-parents-choice-advantage-infant-formula-milk-based-powder-iron) Parent's Choice baby formula due to the possible presence of foreign matter in the product.
This product, sold exclusively at Walmart (WMT), is being recalled because of the potential presence of metal foreign matter in a single lot of the product.
Sadly, he didn't listen and opened a section that was still full of foreign matter. Safe to say he bit off more than he could chew, as he got a face full.
This is why contamination with foreign matter occur very rarely.
The amount, in pounds, of Salisbury steak products recalled by Conagra Brands in April due to potential foreign matter contamination:
White metal is a term used to describe a surface that's uniformly free of all foreign matter and white or gray in appearance.
Common physical qualities used in grading milled rice include number of paddy (unmilled rice kernels) in 1 kg of milled rice, moisture content of grains and percentages of foreign matter, chalky immature grains, contrasting types and broken grains.

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