What is the process of adding foam concentrate directly to an apparatus booster tank known as?

The process of adding foam concentrate directly to an apparatus booster tank is known as batch mixing. In batch mixing, the foam concentrate is combined with water in the tank to create a uniform solution that is ready for use in fire suppression operations. This method allows for the effective distribution of foam throughout the water in the tank, ensuring that when the mixture is used, it produces the desired foam characteristics for firefighting.

This technique contrasts with other methods such as foam injection, which typically involves the addition of foam concentrate into a water stream during discharge, or emulsion blending, which refers to creating a stable mixture of water and foam that retains foam’s properties. Foam infusion suggests a more continuous process, which isn't applicable to the direct addition of foam concentrate to a fixed volume of water. Batch mixing is straightforward and often used in practice because it's effective for preparing larger volumes of firefighting foam, particularly in situations where immediate availability is necessary.