Spare Net Bag for Plankton Nets No. 438 001 Back Catalog number: 438001-001 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435011 Counting Chamber for zooplankton, volume approx. 2 Price on request 435028 Package of 50 Cover Plates, diameter 33mm Price on request 435025 Combined Plate Chamber (Utermöhl-Chamber), set wit Price on request