Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438030 Plankton Net for qualitative collection Price on request 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request 438061 Surcharge for mesh size < 55µ for nets 438 030, 43 Price on request