Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request 435022 Tubular Plankton Chamber, capacity 10ml Price on request 435023 Tubular Plankton Chamber, capacity 25ml Price on request