Whatman® quantitative filter paper, hardened ashless, Grade 541 [Pack of 100]

Description

General description
These are the supreme hardened ashless quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade 541: 22 μm (fast filter paper)
Fast filtration of coarse particles and gelatinous precipitates in acid/alkali solutions during gravimetric analysis. Typical applications include fiber in animal foodstuffs, gelatine in milk and cream, chloride in cement, and chloride and phosphorous in coal and coke.

material
circles
cotton filters (high-quality cotton linters)

packaging
pack of 100

manufacturer/tradename
Whatman

parameter
34 sec/100 mL speed (Herzberg)
7 psi wet burst

thickness
155 μm

ash
≤0.006%

pore size
22 μm (Particle retention)

basis weight
82 g/m2