Filter Paper / Kertas Saring | Whatman 1440-110 Descriptions : Cytiva #39;s Whatman 1440-110 Ashless Grade 40 Quantitative Filter Paper, Diameter: 11cm, Pore Size: 8µm (Pack of 100) - Diameter: 11.0cm; Whatman Grade 40 Quantitative Filter Paper - Retention: 8µm - Classic general purpose ashless filter paper; medium speed and retention; typical applications include gravimetric analysis for numerous components in cements - clays - iron and steel products - Primary filter for separating solid matter from aqueous extracts in general soil analysis and quantitative determination of sediments in milk - Used as a pure analytical grade clean-up filter for solutions prior to AA spectrophotometry; high purity filter in collecting trace elements and radionuclides from the atmosphere - Pack of 100 - Manufacturer Part No: WHA-1440-110