Glass fiber filter, grade GD-120, 47mm Ø, 123g/m², 0.51mm thick, pore size 0.9µm. No binder, max. temp. 500 °C. Prefilter for membrane filters with pore size 0.45 to 1.2µm. Very high loading
Hach Company Glass Fiber Filter, Pore Size 0.7 µm, Diameter 47 mm, 100/pk, | Fisher Scientific
Glass Fibre Depth Filters
Glass Fiber Filters, Extra Thick, Pall Laboratory | VWR