Whatman 1827-808 Glass Fiber Filter Paper Sheet without Binder Grade 9
Filtri in microfibra di vetro GF/A Whatman membrana in carta da filtro in fibra di vetro 1820 025/047/055/070/090/110/125/150 dimensione dei pori 1.6 um| | - AliExpress
Cytiva Whatman Grade 41 Fast Ashless Filter Paper 32 mm:Filters and Filtration, | Fisher Scientific