UV disinfection specialist Aquionics Inc., of Erlanger, Ken., introduces a new control option that ensures UV water treatment systems deliver an optimum dose of UV light even when feed water quality fluctuates. This new product, the Transmittance Monitor, will add an extra level of process validation in applications such as drinking water and wastewater. Microorganisms need to be exposed to a specific dose and intensity of UV light for a given time to ensure disinfection.