What is the first step in cleaning a spill involving broken glass?

The first step in cleaning a spill involving broken glass is to stop the spread of the spill. This is crucial because quick action can help contain hazardous materials and prevent them from spreading further, potentially leading to more extensive contamination or risk of injury. Stopping the spread allows for a safer environment to manage the cleanup, as it minimizes the risk of slip hazards or additional exposure to harmful substances.

Once the spill is contained, other steps such as notifying the lab manager, cleaning up the remaining liquid, or safely handling broken glass can proceed methodically and safely. Addressing the immediate danger by halting the spill's spread ensures that everyone in the vicinity can work with a reduced risk of injury or exposure while the rest of the cleanup is carried out.