Pall 13mm Acrodisc Syringe Filters, PTFE with minispike, 0.2 Pall 13mm Acrodisc Syringe Filters, PTFE with minispike, 0.2 um, NON-sterile, case of 1,000. Pall Catalog No. 2401 25 mm Acrodisc® Syringe Filters with 0.2 µm – Pall Shop Description. Syringe Filters with High Flow Rates and Low Protein Binding 0.2 µm, 25 mm (50/pkg).