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 438020 Plankton Net for quantitative collection with cowl Price on request 435022 Tubular Plankton Chamber, capacity 10ml Price on request 438025-001 Repair Kit for Net Bucket No. 438 025, Price on request