This regulation is a replacement of GB/T 5009.156-2003. Compared with GB/T 5009.156-2003, the main changes of this regulation are as follows:
------The name of the regulation is changed to;
------The structure of the regulation is adjusted;
------The nomenclature and definition are modified;
------The general rules of the test are added;
------The reagents and materials are amended;
------The apparatus and appliance are amended, use requirement of the test pool is added;
------Methods of sampling and sample preparation is amended;
------The area determination is amended, adding the requirements for the ratio of the volume-sample contacting area of the simulant food;
------The sample washing method is amended;
------The test method is amended;
------The result express way is amended.