Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 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 435022 Tubular Plankton Chamber, capacity 10ml Price on request 438030-001 Spare Net Bag for Plankton Net No. 438 030 Price on request