Surface Plankton Net acc. to Apstein Back Catalog number: 438001 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request 435023 Tubular Plankton Chamber, capacity 25ml Price on request