Fast filtration of coarse particles and gelatinous precipitates in acid / alkali solutions during gravimetric analysis. Typical applications incl. fibre in animal foodstuffs, gelatine in milk and cream, chloride in cement and chloride and phosphorous in coal and coke. Fast filtration of coarse particles and gelatinous precipitates in acid / alkali solutions during gravimetric analysis. Typical applications incl. fibre in animal foodstuffs, gelatine in milk and cream, chloride in cement and chloride and phosphorous in coal and coke.