Drop-messenger-operated closing mechanism Back Catalog number: 438520 Availability: In the manufacturer's stock Price on request - + Recommended 438212 Net Part for Neuston Net, mesh size 300microns Price on request 438650 Stream Bottom Sampler, Surber Type, mesh size 500 Price on request 8286A-150 SteriWare Scoop 150ml - PS - Box of 100 Price on request