The acid storage tank holds the acid that will be used in the dosing process. The tank is typically made of plastic or stainless steel and is designed to withstand the corrosive properties of the acid being stored.

The metering pump is used to accurately dispense a specific amount of acid into the system. The pump can be controlled manually or automatically, depending on the application.

The control system is used to monitor and regulate the acid dosing process. It typically includes sensors, such as pH sensors, that measure the acidity of the system, and control valves that regulate the flow of acid.

The valves and piping in the system are used to direct the flow of acid from the storage tank to the metering pump and into the process or system. They are typically made of materials that are resistant to corrosion from the acid being used.

Overall, an acid dosing system is used to introduce a precise amount of acid into a process or system, typically in order to adjust the pH level or to remove impurities.