The action levels for lead in ceramic tableware glazes are listed in the booklet "ACTION LEVELS FOR POISONOUS OR DELETERIOUS SUBSTANCES IN HUMAN FOOD AND ANIMAL FEED" on the FDA Homepage at http://www.cfsan.fda.gov/~lrd/fdaact.html#lead
The action levels for cadmium in ceramic tableware glazes are also listed in the booklet "ACTION LEVELS FOR POISONOUS OR DELETERIOUS SUBSTANCES IN HUMAN FOOD AND ANIMAL FEED" on the FDA Homepage at http://www.cfsan.fda.gov/~lrd/fdaact.html#cadm
Source: Industry Activities Staff, May 2000