Available in 4, 13, 25, 33, and 50 mm diameters. Minimal hold-up volume for less sample loss o f small volumes and are ideal for solutions such as antibiotics and tissue culture additives. high performance 0.2 um PTFE syringe filter Millex-Analytical Oct 29, 2021 · The 50 mm Millex® filter units are especially useful for vacuum lin