Funnel for filtering liquids, applicable to filtering operations that are performed using a cone filter paper introduced into the conical part of the funnel, characterized in that the inner face of said conical part is provided with multiple grooves directed in direction of the generatrices of the own conical part, which rise on the upper edge of the funnel and die on top of the stem of the funnel, said grooves adapted to prevent the filter paper adheres completely to the inner wall of the conical part of the funnel, thus facilitating the filtering operation.
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