What is one critical factor to consider when using a drying oven?

When using a drying oven, it is essential to ensure that no flammable materials are placed inside. Drying ovens operate at elevated temperatures, and the heat can ignite volatile substances or materials that are combustible. Placing flammable items in a drying oven poses a significant fire hazard, which could endanger both the user and the laboratory environment.

By keeping flammable materials out of the oven, the risk of a fire or explosion due to ignition of such substances is minimized. This precaution is part of broader laboratory safety practices to maintain a safe working environment, particularly when using equipment that produces heat. Identifying and managing hazards is a fundamental aspect of laboratory safety protocols.