VARNA Products’ 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 to 5 gal/hour). It has a viscosity range of 30 cSt to 600 cSt for fluids compatible with aluminum, steel Viton and Teflon wetted materials, and is powered by a 1/10 hp, 24VDC brushless motor with integral drive electronics. The pump flow can be set with a 0- to 5-volt analog signal. It is a good fit for applications such as metering, dosing, bottling, medical, chemical, and more. – varnaproducts.com