An apparatus for filtering a chloride of lime bleaching fluid may be made easily. In the tube of a large glass funnel fix a short piece of the stem of a clay tobacco pipe; on the top of this pile a few pieces of broken tobacco pipe, and cover them with a layer of fine silver sand. This arrangement can be used as a filtering bed for the bleaching fluid; when the bed becomes clogged and does not act properly, wash out the funnel and refill it with fresh material in the manner already described. Another method of clearing bleaching fluid is to allow it to settle in a tall vessel, and syphon off the clear liquid. A sj'phou is easily made by bending a pipe, or one may be purchased very cheaply.