Zebra Skimmers Corp.

William M Burkey

Steven L Davidian

Processes of and apparatus for supplying to an operation a liquid that is applied at the operation comprise delivering to the operation from a holding vessel a liquid of a prescribed composition comprising more than one constituent, whereby a spent liquid having a composition different from the prescribed composition can be formed at the operation. The spent liquid is returned to the holding vessel for redelivery to the operation. The composition of the liquid at the holding vessel can be continuously analyzed and the amount of each constituent of the liquid required to be added to the liquid at the holding vessel to provide a liquid of the prescribed composition determined and that amount of each constituent delivered to the holding vessel. A plurality of operations and respective holding vessels can be involved. The operations can comprise metalworking operations and the liquid of a prescribed composition can comprise a coolant.

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Cleveland, OH, United States of America

William M Burkey