The Qdos series of chemical-metering pumps (photo) now includes a model for mobile and remote applications — with no practical access to grid electricity — that can be powered by a 12–24 V d.c. power supply. Suitable for both remote static and mobile battery-powered applications, typical uses of the new Qdos model include remote water treatment and sampling, potable water refining and on-truck pumping operations. For very remote applications, the pump is able to run from batteries that can be recharged via solar cells, other renewable energy sources or split charge relays, says the manufacturer. The product is self-contained and does not require any additional components. — Watson-Marlow Fluid Technology Group (WMFTG), Cornwall, U.K.