By T. R. Crompton
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Extra resources for Additive Migration from Plastics Into Food
MJ 2 f - (MOj "(MtT* 45 46 Additive Migration from Plastics into Food (b) In the zone between the preceeding one (a) and the zone of complete extraction, (c) the relationship tends to become somewhat obscure. e. that the coefficients of distribution are the same. In practice, one tends to compensate for the difference between D ^ a n d D2 1 by simulating the phenomena of contact which occur over long periods of time in the presence of oil and fats by means of short period tests at low temperatures with very active solvents, even in this case, however, the observation that this procedures does not have any physical value still remains valid, yet it has been amply justified by the practical necessity of reducing the time and cost of control tests.
Category D Plastics for food manufacturing or processing plant should be subjected to extraction test to be agreed between the supplier and the purchaser under conditions of temperature and time appropriate to the individual use of the material. The principles of testing outlined above are in general designed to give a measure of acceleration and/or exceptional severity. There are, however, plastics which are well established in certain applications involving contact with food which under test conditions undergo attack which would not be met in service.
5 in. internal diameter with B40 cone. 25 in. Lugs on tube and stopper and spring clips. (b) Oil bath temperature control ±2 C. holes to hold extraction tubes. Aluminium tray on top of bath with (c) Miscellaneous glassware, measuring cyclinders, pipettes, beakers. /v. made from fANALARf solid Na2CÛ3 anhydrous. /v. made from l ANALARf solid monohydrate. /v. made using redistilled ethanol. /v. P. Lev. in the place of olive oil. Additive Migration from Plastics into Food 26 Procedure 5. (a) Carry out each extractability test and blank run in duplicate.
Additive Migration from Plastics Into Food by T. R. Crompton