Plankton Net for quantitative collection with cowl Back Catalog number: 438020 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438030 Plankton Net for qualitative collection Price on request 435035 Package of 250 Base Plates, diameter 27.5mm Price on request 438045 Spare Net Part for Plankton Nets No. 438 040 and 4 Price on request