Whatman 1441047 Quantitative Filter Paper Ash less Filter Circles, Grade 41, 47 mm, Maximum Volume 1764 ml/m (Pack of 100): Amazon.com: Industrial & Scientific
Cytiva Papiers quantitatifs Whatman™ : Cercles de grade 41 Diamètre : 60 mm Cytiva Papiers quantitatifs Whatman™ : Cercles de grade 41 | Fisher Scientific