| toxicity tests | Tests that determine the toxicity of a substance. These include tests of clinical drugs, foods, environmental pollutants, etc. (12 Dec 1998) |
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| ep toxicity | A test defined by the federal Environmental Protection Agency to check a substance for the presence of arsenic, barium, cadmium, chromium, lead, mercury, selenium, or silver. 40 CFR 261.24 defines the concentrations constituting hazardous waste and the test procedure. (05 Dec 1998) |
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