Abstract: A disposable cartridge for use as a filter in particular for soluble elements, aromatic herbs such as tea, coffee, chamomile, infusion, whose configuration comprises means for securely and stably fixing it without occupying the entire annular diameter of a cup or container, characterized in that it is made up of a symmetrical laminar template (2) whose plantar shape is determined by an upper area of sinusoidal contours (3) with a superior central ridge or rounded tongue (4) followed by curved shoulders (4a) is the middle area of which it is present a groove or opening of oblong configuration (5) with rounded ends (6), which serves as means for cartridge holding (1) with the cup (8) upper perimetric rim (7) in which the lower area of the template (2) has a triangular obtuse-angled body (9) with straight sides (9a).

Abstract: A disposable cartridge, to be used as a filter, specifically for the infusion of soluble elements, aromatic herbs such as tea, coffee, chamomile, equipped with fastening means, is made up of a laminar template, divided into three sections of straight edges, one central section, which makes up the container and two similar side sections arranged obliquely, which, when overlapped constitute a rear straight wall, the side sections arranged obliquely are equipped with an extension or section, that make up a handle when overlapping, both equipped with a tab, a smaller one for fastening and a larger tab, both are the means used to fasten to an annular ring of a cup or similar.