Sartorius 11407-47-ACR Membrane Disc Filter, Cellulose Nitrate, Sterile, White with Black Grids, 0.2 μm, 47 mm (Pack of 1000): Amazon.com: Industrial & Scientific
Sartorius 11406-47-ACN Membrane Filter Disc, Cellulose Nitrate, Sterile, 0.45 μm, 47mm, White with Black Grids (Pack of 100): Amazon.com: Industrial & Scientific
Sartorius Membrane filter Product Part list | Official GiMiTEC™ Website