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Advantec MFS A045R047W Membrane Filter with Pad, Sterile, Grid, 47 mm Diameter, Mixed Cellulose Esters (Pack of 1000): Amazon.com: Industrial & Scientific
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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
Membrane filters Nitrocellulose 0.45 µm, Ø 47 mm, sterile with grid | Membrane filters | Filtration and separation | Filtration, Water Purification, Dialysis | Labware | Carl Roth - International
Cellulose Nitrate (Mixed Cellulose Ester) Membrane Filters / Type 11306, 0.45 µm pore size, 37 mm diameter, 100 pieces per pack | Sartorius
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