The ASHBURN COOLANT REJUVENATOR is a sump-side additive designed to eliminate foul odors associated with metalworking fluids. This product will also raise the pH level of the diluted metalworking fluid and provide better long term stability of the coolant. This promotes longer sump life and greatly reduces costs associated with coolant removal, sump cleaning, machine tool downtime, and disposal of the spent metalworking fluid. One pint of product will treat 50 gallons of diluted coolant.