This is the most sensitive and direct test of chemical environmental toxicity in the nation. Materials that cannot pass this test are classified as toxic by California standards.

Companies have conducted these tests for decades, producing immense data on the toxic limit—or LC50 value, the lethal concentration it takes to kill 50% of the animals being tested—of all ...

The new model skips the explicit prediction of a toxicity value (96h LC50) for each chemical, but directly classifies each chemical into a number of pre-defined toxicity categories.

Non-Toxic: The probably lethal concentration of the undiluted product to 50% of the test animals (LC50) is greater than 200 milligrams per liter by volume when inhaled continuously for one hour or ...