Spare Net Bag for Plankton Net No. 438 030 Back Catalog number: 438030-001 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 435025 Combined Plate Chamber (Utermöhl-Chamber), set wit Price on request 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request