Acute Toxicity of Mexel 432 to Freshwater Fish and the Effects of Five-Minute Daily Exposure to a Cladoceran

Abstract

Three toxicity tests were conducted during June and July of 1997 to complete a set of tests designed to show the toxicity of Mexel® 432 to a group of freshwater organisms. The tests included in this report are a five-minute daily exposure to the cladoceran, Daphnia magna, and 96-h continuous exposures to the fathead minnow, Pimephales promelas, and the rainbow trout, Oncorhynchus mykiss. The tests were conducted with methods consistent with those used to conduct previous tests with Mexel® with the same species.