Surcharge for mesh size < 55µ for nets 438 000, 43 Back Catalog number: 438060 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 435100 Folsom's Plankton Sample Divider Price on request 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 438020 Plankton Net for quantitative collection with cowl Price on request