Cytiva's Whatman™ 1444-090 Ashless Grade 44 Quantitative Filter Paper, Diameter: 9cm, Pore Size: 3µm (Pack of 100)
Diameter: 9.0cm
Retention: 3µm
Whatman™ Grade 44 filter paper is the thin version of grade 42
Retains very fine particles but with lower ash weight per sample
Almost twice the flow rate as Grade 42
Pack of 100
Manufacturer: Cytiva