Principles of Extractability Testing

The extractability of an additive or adventitious substance from a plastic can be determined by contacting the plastic for a specified time and temperature under standard test conditions with either the packed commodity or with a range of oily, 

Both of the classes of substances mentioned previously, (i.e., additives and impurities) must be considered in polymer extractability investigations and the higher the 

The specified conditions of the plastic extraction test and food simulating extraction solvents prescribed in the test by various authorities differ considerably. As an example of the type of test procedure recommended, those of the European Union (EU) and those of the Food and Drug Administration (FDA) of the USA are discussed next in some detail as examples of procedures which receive recognition in countries other than the country of origin. 

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