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 438001 Surface Plankton Net acc. to Apstein Price on request 438040 Plankton Net for quantitative collection with cowl Price on request