The Model TG-300 variable-speed low-flow pump is a positive displacement gear pump designed for smooth, continuous flows from 0 to 400 mL/min (0–5 gal/h). Fluids compatible with aluminum, steel, Viton and Teflon-wetted materials and viscosities of 30–600 cSt can be handled by the pump, which is powered by a 0.1-hp, 24-V d.c. brushless motor with internal drive electronics. The TG-300 pump’s flow can be set with a 0–5-V analog signal. — Varna Products, Cameron, Calif.