A professional who routes flow of wash water from char filter as directed by liquor-bridge operator. Respnsibilities include:

• Prepares filter-record board, showing filters to be filled with liquor.
• Ties clean pockets on filter discharge nipple to prevent splashing in weir boxes.
• Changes weir boxes to divert flow of sweetwater (wash water from filter containing sugar) or waste water to specified tanks or bays, noting changes on filter record board.
• Tests water for density to ascertain sugar content, using hydrometer.
• Bottles samples of liquor and sweetwater for laboratory analysis.
• Washes weir boxes and keeps work station in sanitary condition.