The Whatman® Quantitative Filter Paper, Hardened Low-Ash, Grade 54 manufactured by Whatman is ideal for filtration of coarse and gelatinous precipitates. The wet strength and chemical resistance are same with the acid hardened ashless Filter papers.
Specification
Material: Cellulose filters, circles Packaging: Pack of 100 Parameter: 39 sec/100 mL speed (Herzberg), 7 psi wet burst L × W: 460 mm × 570 mm Thickness: 185 μm Ash: ≤0.015% Pore size: 22 μm (Particle retention) Basis weight: 92 g/m2