Heico Perma Wash is a highly concentrated neutral liquid that not only saves a tremendous amount of time and wash water, but even more importantly provides archival permanence in both films and papers. Perma Wash is available in 1 qt., 1 gal., and 5 gallon concentrates. A one quart bottle will make 11 gallons of working solution. Perma Wash saves more than 90% of normal wash water requirements which is estimated that the operating cost is one cent per 8 x 10" sheet of film or paper processed. Perma Wash is non-corrosive and is formaldehyde free.