A dosing pump, or metering pump, is a positive displacement pump designed to inject a precise, adjustable volume of chemical solution into a stream of water or industrial process over a set period. It is engineered for high accuracy and repeatability, ensuring the correct concentration of treatment chemicals. In water treatment, it is indispensable for tasks such as injecting antiscalant to protect RO membranes, adding chlorine for disinfection, or adjusting pH levels with acids or alkalis. The pump's consistent, automated operation is critical for maintaining system efficiency, preventing fouling, and ensuring product water quality.