Arco Chemical Technology, L.p.

Cytometrics, Inc.

Ernel O Simpson

Haven S Kesling, Jr

Jeffrey M McFarland

Michael P Law

Richard G Nadeau, Jr

A disposable protective cap and method for covering a probe in a spectral imaging apparatus are provided. The cap protects the probe from direct contact with a subject's tissues. The cap is hollow and elongated to cover the probe, having an open end and a closed end. At the closed end is an optically transparent face. This permits light to be transmitted from the probe through the closed end of the cap with minimal optical distortion. At the open end of the cap are components which interact with the probe to assure that the cap is not used more than one time. These components can use electrical interaction to assure only a single disposable use of the cap. Mechanically interacting components can also be used, either alone or in combination with electrically interacting components to assure only a single use of the cap.

Single use disposable protective cap

Microemulsion cleaner compositions are disclosed. The cleaners comprise a terpene, a secondary or tertiary C.sub.4 -C.sub.5 alcohol, a surfactant, and water. Compared with commercial formulations, cleaners of the invention are low in water, high in hydrocarbon, and have excellent degreasing capability. The secondary or tertiary C.sub.4 -C.sub.5 alcohol coupling solvent, compared with other alcohols, significantly reduces the amount of surfactant required to produce a stable, effective microemulsion cleaner. The compositions are particularly valuable as metal degreasers.

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Yardley, PA, United States of America

Ernel O Simpson