1. We describe a floating respirometer,in particular for monitoring an activated sludge vessel of a sewage treatment plant.

2. Aquation’s range of products includes innovative chlorophyll fluorometers, water quality monitoring devices, PAR and spherical PAR light sensors, respirometer systems, custom phytoplankton monitoring solutions, temperature and pH monitors.

3. A respirometer lander experiment to study ecosystem function was used which will allow the contractor to gain the first insights into the response rate of bacteria and macrofauna to phytodetritus deposition, and C-cycling rates in Clarion-Clipperton Zone abyssal seafloor sediments.