Ethidium Bromide is commonly used in molecular biology electrophoresis gels. While Ethidium Bromide is not regulated as hazardous waste, the mutagenic properties of this substance may pose a hazard.
Based on these considerations, the proper method for disposal, at MSU, is to complete a Hazardous Waste Pickup Request Form: http://www.montana.edu/srm/forms/waste/index.php
Prior to Safety & Risk Management picking up the materials, gels need to be dried and completely void of free liquid, and placed in a sealed bag or container that is labeled “Ethidium Bromide Waste”.
Gloves, test tubes, paper towels, etc., that are grossly contaminated with Ethidium Bromide shall also be placed in a sealed bag and labeled “Ethidium Bromide Waste”.