Sartorius, 17594-----Q, Minisart 5um, 1.1", NML Syringe Filter, Cellulose Acetate, Nonsterile, Luer Lock Outlet, 500pcs. Minisart ® NML with surfactant-free cellulose acetate (SFCA) is the best choice for all aqueous solutions and oils with a pH of 4 - 8. Type 17594 with a pore size of 5 µm can be used for particle, rubber grit and cell removal and has a male luer lock outlet.