Surcharge for mesh size < 55µ for nets 438 030, 43 Back Catalog number: 438061 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438001 Surface Plankton Net acc. to Apstein Price on request 435023 Tubular Plankton Chamber, capacity 25ml Price on request 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request