12 V peristaltic pump with adjustable liquid flow control and features designed for reliable dosing and circulation in lab and aquarium settings. The speed is adjustable from 0.1 to 60 U/min, and the unit includes a priming function and bidirectional rotation for flexible operation. Designed for lab technicians, aquarium enthusiasts, and researchers who need precise dosing or controlled water circulation in a regulated environment. Constructed with a metal housing, chemical-resistant silicone tubing, and a silent motor operating below 50 dB, enabling dependable liquid transfer in demanding conditions. Applications include distributing aquarium medications, titrating lab reagents, and integrating with automated liquid handling systems where steady flow and straightforward operation are important. Use scenarios - Precise dosing in aquariums: accurately deliver medications or additives while maintaining stable water flow and circulation. - Laboratory reagent titration: controlled, repeatable addition of reagents to samples with bidirectional pumping capability. - Automated liquid handling systems: integrate into automated workflows requiring consistent flow and simple, reliable operation in a compact package.