Environmental Health & Safety

University of Colorado Boulder

Resources

Guidance for cleaning out Ultra Low Temperature freezers, other freezers and refrigerators

General Description

This document describes procedures to help laboratories clean out and dispose of unused or unwanted items contained in ULT freezers and other freezers and refrigerators.  All items removed from any freezer or refrigerator must be carefully evaluated to ensure that they are disposed of properly.  For most biological kits and biological samples there is a consolidation procedure described below that can be implemented by laboratory personnel and will greatly reduce the volume of waste and the amount of hazardous waste tags that need to be completed by the research group.  For chemical reagents, EH&S has a segregation procedure that will reduce the amount of hazardous waste tags that need to be completed; this also described below.