Ready to use high quality nets manufactured to our specifications and designed for long use. Not cheap poorly constructed imitations. These small plankton collecting nets are ideal for sampling ponds or for small scale plankton cultures. Net is conical in shape, 5″ in diameter by 15″ long with a 1″ threaded female PVC outlet for easy attachment of any type of collector or piping you desire. Comes with two screw-on, 50 ml, conical, removable collecting tubes. Brass mouth ring and harness for towing included. Mesh sizes, 50 and 153 microns.