Which is the most common safety rules to follow before leaving the lab

The answer would be to always wash your hands!

The most common safety rules to follow before leaving a lab are the following:

Explanation:

Wipe down all equipment, materials, etc with disinfectant wipes.

Throw out any trash or biohazardous materials.

Store papers, documents, and lab equipment such as microscopes and goggles back where they are supposed to be stored.

Make sure to turn off all equipment so they aren't running while you or others aren't there.