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 438001-001 Spare Net Bag for Plankton Nets No. 438 001 Price on request 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 435021 Tubular Plankton Chamber, capacity 5ml Price on request