Acrodisc Syringe Filters With Versapor Membrane, 4 and 13 mm 4473 0.45 µm, 4 mm 250/pkg, 750/cs NA 0 4459 0.8 µm, 13 mm 100/pkg, 300/cs NA 0 Zymark and SOTAX Automation Certified Acrodisc PSF Syringe Filters With Versapor Membrane, 25 mm AP-4190 0.8 µm, AutoPack tubes 25/pkg, 200/cs NA 0 AP-4189 0.8 µm 50/pkg, 200/cs NA 0 AP-4568 0.8 µm