BRANCHIA ashless quantitative filter paper, medium-low flow rate

Ashless paper (<0.007%) made of cotton fibers for medium-slow filtration. Used for gravimetric analysis for numerous components, as well as all types of pre-filtrations. Suitable as a primary filter to separate solid matter and fine precipitates from aqueous extracts, soil analysis and quantitative determinations of fats and oils in water, sediments in milk and cleaning of solutions for AAS (Atomic Absorption Sprectrophotometry). Weight 85 g / m², thickness 170 μm, filtration speed 100 s, retention 7 - 9 μm, wet bursting strength> 30 kPa. Available in discs (presented in packages of 100 discs in box). Equivalence: Whatman 40