The new WFI-Flex (WFI = water for injection) power control can help reduce energy costs in water treatment. With the WFI-Flex control for all multi-stage water systems, operation is possible in a range from 10 to 100% at maximum load. The power is increased or decreased as a function of the level in the tank; so the number of on-off switching cycles can be greatly minimized. The system is always running at optimal levels — with improved energy efficiency and a simultaneous reduction of media and heating steam. When used in a system such as the Multitron (photo), with a capacity of 15 m3/h, a “six-figure sum per year” can be saved quickly, by dispensing with just four startup and shutdown processes per day, says the manufacturer. Also, the distillation system has been completely redesigned for WFI production, and now offers it with an increased capacity range of up to 17 m3/h. — Christ Aqua Pharma & Biotech, Vaihingen/Enz, Germany