Minisart NML Syringe Filter with Surfactant-Free Cellulose Acetate . Sartorius Minisart NML Syringe Filters - Minisart NML Syringe Filter with Surfactant-Free Cellulose Acetate, 0.2 μm, 28 mm, Male Luer Lock, ETO Sterilized, Blue Sartorius Syringe Filter at Thomas Scientific. Minisart Plus: Fast, sterile filtration of high particulate liquids.