Many of the laboratory’s original chemical replenishment systems had become inaccurate over time, with some continuously leaking chemistry into waste streams. To improve precision and reduce waste, I redesigned several of these systems using retrofitted peristaltic pump assemblies powered by 24-volt motors. By calibrating the pumps through PWM motor control, I was able to create precise chemical dosing systems tailored to each machine’s operational requirements. The upgrades substantially reduced chemical waste while lowering recycling and operational costs. Projects like this highlight how modern control systems can improve sustainability and efficiency even within decades-old industrial infrastructure.