Boil, wash, and clean filters used in the manufacture of explosives.
What does a Filter Washer do?
Boils, washes, and cleans filters, such as cloth strainers and metal grids used in manufacture of explosives: Soaks filters in solution of boiling water and soap powder or caustic solution. Scrapes and dissolves with acetone any tetryl powder remaining. Hangs cloth filters on drying racks.