Abstract: The present invention provides a greatly improved method of squeegeeing a film of liquid from the inner surface of a transparent or semi-transparent tube after the liquid is drained from the tube so that the liquid level from a subsequent filling of the tube can be readily observed. In addition to removing the film of liquid, the present invention also provides a means to allow for overflow of the tube by allowing liquid to pass the squeegee device and reach an over-flow point located at the top of the tube. In addition, the present invention provides a means of sealing the entry point of the rod used to move the squeegee inside the tube so that liquid seed treatment does not leak out of the tube when it becomes filled. The features of the present invention maintain the closed nature of the system so that it is not required that the operator contacts the seed treatment liquid and that no spills or leaks occur.

Abstract: The invention discloses a method for preparing pelleted lignocellulosic ion exchange materials for use in a variety of industrial and municipal water treatment applications. The method involves milling, sifting, binding, extruding, cutting, and baking steps. The resultant pellet is suitable for use in ion exchange columns and can be regenerated.