Surface Plankton Net acc. to Apstein Back Catalog number: 438001 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438045 Spare Net Part for Plankton Nets No. 438 040 and 4 Price on request 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 438061 Surcharge for mesh size < 55µ for nets 438 030, 43 Price on request