With guidance from John Gannon of the Great Lakes Lab in Windsor, Ontario, Wildco has developed the definitive low-cost apparatus for enumerating zooplankton micro-crustacea.

It is the perfect size to hold a large volume of sample - about 39 mL. The shape and configuration of the shallow, etched groove (1/2" deep and 3/8" thick) help locate specific areas on the chamber. A compact 3-1/2" by 4-1/2" in size, it slips easily under a dissecting microscope. Straight sides mean you don't have to focus up and down. Rounded edges prevent specimens from catching.