We have used these filters for years in our office and we have had no problems or complaints from people drinking our percolated coffee. It is an unbleached filter using natural pulp. Considering water resources, the manufacturer has completely eliminated the bleaching process from the production line. It is the natural brown color of the pulp. Since there is no unevenness in the filter fibers and the mesh is uniform, a stable extract of coffee from the coffee grounds can be obtained without sacrificing the flavor of coffee. THEY are easily disposable and the filters and the used coffee grounds can be used as compost to fertilize your garden soil. It is all biodegradable. It's organic. This description is COPYRIGHTED.
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