Aquatic toxicity is typically measured using toxicity tests, which involve exposing aquatic organisms to different concentrations of a substance to observe adverse effects. Common test organisms include fish, algae, and invertebrates. The tests can be acute or chronic, focusing on short-term lethal effects or long-term sub-lethal effects, respectively. Measurements like LC50 (Lethal Concentration for 50% of the population) and EC50 (Effective Concentration for 50% of the population) are commonly used metrics.
