Cytiva Papel de filtro cuantitativo endurecido de baja ceniza Whatman™, grado 50 Diámetro: 63,5 mm Papel de filtro para análisis cuantitativo | Fisher Scientific
Whatman qualitative filter paper, Grade 5 circles, diam. 110 mm, pack of 100 Whatman paper
Whatman 1001-055 Whatman 1001-055 Qualitative Filter Papers; 5.5 cm Diameter; Pore Size, 11µ (Pack of 100): Amazon.com: Industrial & Scientific
Whatman qualitative filter paper, Grade 5 circles, diam. 110 mm, pack of 100 Whatman paper