Surcharge for mesh size < 55µ for nets 438 030, 43 Back Catalog number: 438061 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 435011B Counting Chamber for zooplankton, dimensions 80 x Price on request 435094 Plunger Sampling Pipette acc. to Hensen, capacity Price on request