A professional who tends tanks in which viscose slurry is aged and blended for use in rayon and cellophane production. Respnsibilities include:

• Pumps slurry from mixing machines to blending and aging tanks, and from tanks to processing area after specified time.
• Records aging time for each batch in plant log.
• May tend tanks in which cellulose (viscose raw material) is aged, by moving controls to maintain tank temperature or room temperature at prescribed level, and be designated Ripening-Room Operator.