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
PDF] The use of nylon and glass fiber filter separators with different pore sizes in air-cathode single-chamber microbial fuel cells | Semantic Scholar
Glass Fiber Filter without binder 0.7 µm pore size, hydrophilic glass fiber, 10 mm diameter | Sigma-Aldrich
Hach 253000 TSS Glass Fiber Filter, Pore Size 1.5 µm, Diameter 47 mm (Pack of 100): Amazon.com: Industrial & Scientific
TSS Glass Fiber Filter, Pore Size 1.5 µm, Diameter 47 mm, 100/pk | Hach USA - Overview