Surcharge for mesh size < 55µ for nets 438 000, 43 Back Catalog number: 438060 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435011C Counting Chamber for zooplankton, dimensions 80 x Price on request 435100 Folsom's Plankton Sample Divider Price on request 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request