Package of 250 Base Plates, diameter 27.5mm Back Catalog number: 435035 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438010 Plankton Net for quantitative collections with cow Price on request 435094 Plunger Sampling Pipette acc. to Hensen, capacity Price on request 435011C Counting Chamber for zooplankton, dimensions 80 x Price on request