For sample volumes of 0.4mL or less with single funnels and 0.25mL or less for double funnels Deposits thin layer of cells in clearly defined area of microscope slide Provides consistent and homogeneous cell deposition area of 6mm Pre-attached filter card to facilitate absorption of excess fluid, designed for single use only Funnel sealing caps included Stainless steel clips available to hold funnels against slide while being centrifuged