Package of 50 Cover Plates, diameter 33mm Back Catalog number: 435028 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435011 Counting Chamber for zooplankton, volume approx. 2 Price on request 435093 Plunger Sampling Pipette acc. to Hensen, capacity Price on request 438020 Plankton Net for quantitative collection with cowl Price on request