Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435092 Plunger Sampling Pipette acc. to Hensen, capacity Price on request 438055 Spare Net Bucket, for Plankton Nets No. 438030 / 4 Price on request 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request