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GE Healthcare 1444-125 Grade 44 Ash Less Filter Paper, Thin, Circle, 125 mm Diameter (Pack of 100): Amazon.com: Industrial & Scientific
Whatman 1540-110, Grade 540 Ashless General Lab Filter Paper, 110 mm circles (100 pcs)
Whatman Grade 541 quantitative hardened ashless filter papers - GE Healthcare Life Sciences
99-192-090 Double Ring Qualitative Filter Paper MEDIUM102 GE Healthcare 01120665 - Diameter (Φcm): 9, Thickness (μm): 158, JIS Standard: JIS P 3801 2 class equivalent, Basis Weight (g/m<sup>2</sup>): 80.0±4.0 | MonotaRO Philippines