Test substance. The use of radioactive test substance is required for all mate- rials balance and metabolite identifica- tion requirements of the study. Ideally, the purity of both radioactive and non- radioactive test substance should be greater than 99 percent. The radio- active and nonradioactive substances shall be chromatographed separately and together to establish purity and identity. If the purity is less than 99 percent or if the chromatograms differ significantly, EPA should be consulted.
Appears in 10 contracts
Samples: Testing Consent Agreements and Test Rules, Testing Consent Agreements and Test Rules, Testing Consent Agreements and Test Rules
