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 435011 Counting Chamber for zooplankton, volume approx. 2 Price on request 435098 Set of 10 Spare Dilution Bottles 250ml Price on request 435022 Tubular Plankton Chamber, capacity 10ml Price on request