Package of 250 Base Plates, diameter 27.5mm Back Catalog number: 435035 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438060 Surcharge for mesh size < 55µ for nets 438 000, 43 Price on request 435023 Tubular Plankton Chamber, capacity 25ml Price on request 435098 Set of 10 Spare Dilution Bottles 250ml Price on request