This universal adaptor allows you to replace a standard 50mm filter with a collecting bottle. It is compatible with the nets listed below, all of which come with a 50mm filter as standard:
* Plankton Net 300mm Frame (only versions with 50mm filter)
* Plankton Net 250mm Frame (only versions with 50mm filter)
* Drift net bag with open end
* Downstream net and filter for Hess sampler
The adaptor also fits the Malaise trap, where it connects the collecting bottle to the main trap.