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 438001 Surface Plankton Net acc. to Apstein Price on request 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 438010 Plankton Net for quantitative collections with cow Price on request