INWATROL L.Nella+

INWATROL L.nella+ is a patented measuring device for the automated determination of Legionella concentrations in cooling water systems. The system is designed for continuous monitoring of hygienically relevant water quality parameters in evaporative cooling systems, cooling towers, and wet scrubbers.
Connected directly to the water system, the device automatically collects and analyzes water samples and determines the concentration of Legionella spp. within approximately five hours. Measurement results are displayed online via the INWAnet platform in CFU/100 ml, providing operators with continuous access to current hygiene data and trend analyses.
The measurement method is based on a patented process that determines the metabolic activity of living Legionella cells and shows a high correlation with established cultivation methods according to ISO 11731. In addition to Legionella monitoring, the system can continuously measure and document key cooling water parameters such as chlorine, redox potential, conductivity, and pH value.
INWATROL L.nella+ enables near real-time monitoring of Legionella contamination and supports rapid response to changing system conditions. If predefined limit values are exceeded, alarm notifications can be issued automatically. The system can also be configured to trigger automated biocide dosing in order to reduce Legionella concentrations as required.