Set of 10 Spare Dilution Bottles 250ml Back Catalog number: 435098 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request 435011B Counting Chamber for zooplankton, dimensions 80 x Price on request 435015 Plankton Chamber acc. to Kolkwitz, capacity 0.5ml Price on request