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 435010 Counting Chamber for zooplankton, volume approx. 9 Price on request 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request 435015 Plankton Chamber acc. to Kolkwitz, capacity 0.5ml Price on request