Learn how to use a 3 compartment sink correctly for sanitation purposes and implement test strips. Using a three compartment sink is an important part of proper sanitation in commercial kitchens. This sink allows for the safe and effective cleaning of items used in food preparation and service. The three compartments provide a designated area for washing, rinsing and sanitizing, which help to prevent cross-contamination and the spread of bacteria. By following proper sanitation protocols, restaurants are able to provide customers with safe, quality food.