Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438050 Plankton Net for quantitative collection with cowl Price on request 438010 Plankton Net for quantitative collections with cow Price on request 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request