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Glass Microfiber Filters GF/A Whatman Glass Fiber Filter Paper Membrane 1820-025/047/055/070/090/110/125/150 Pore Size 1.6 um - AliExpress
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Whatman 1822-070 Glass Microfiber Binder Free Filter, 1.2 Micron, 6.7 s/100mL Flow Rate, Grade GF/C, 70mm Diameter (Pack of 100): Science Lab Filter Membranes: Amazon.com: Industrial & Scientific
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Whatman 1827-025 Glass Microfiber Binder Free Filter, 1.5 Micron, 3.7 s/100mL Flow Rate, Grade 934-AH, 2.5cm Diameter (Pack of 100): Science Lab Glass Fiber Filters: Amazon.com: Industrial & Scientific
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