More particularly, the present invention relates to a dispenser (1) for a liquid-to-particulate material, characterized in that the dispenser (1) is arranged so that when the dispenser (1) is normally handled, i.e. during vertical pumping, A pumping chamber (14) having a lower pumping chamber wall (12); The lower portion 12 and the upper pumping chamber walls 9 extend laterally outward from the side inward relative to the geometric axis x extending vertically through the center of the pumping chamber 14. [ To advantageously improve the dispenser of the type described above, the lower pumping chamber wall 12 is connected to the upper pumping chamber wall 9 by designing the two walls as a single part or by welding or adhering the two walls together, When the dispenser is actuated, the lower pumping chamber wall 12 is folded inwardly in such a manner that a raised area is formed laterally inwardly and a lowered area is laterally outwardly disposed for material to be dispensed .
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