Neptune Trident Sample Line Filter Protect Your Trident with Clean, Reliable Water Sampling The Neptune Systems Trident Sample Line Filter is a genuine replacement accessory designed to keep your Trident Automated Water Analyzer operating accurately and reliably. Installed on the sample intake line, this small but essential filter prevents debris, detritus, and particulate matter from entering the Trident system. By ensuring only clean water reaches the testing chamber, the filter helps maintain accurate Alkalinity, Calcium, and Magnesium readings while reducing the risk of clogs and internal wear. Key Features Genuine Neptune Systems replacement part Filters debris from Trident sample intake line Helps maintain stable and accurate test results Protects internal pumps and fluid pathways Simple inline installation Designed for long-term aquarium use Compatible with freshwater and saltwater systems