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Gish Biomedical, Inc.

Lisa A Tam

Jack W Brown

George W White

A method and device for measuring the concentration of solids within a liquid medium, or other optical properties of a liquid solution or suspension, by the technology of reflectance. In a preferred embodiment, the reflectivity measuring device of the present invention comprises a measuring head or probe having at least one radiation source and at least one radiation sensor positioned therein. The head or probe is attached to a controller/data readout having a microprocessor control system housed therein. The head or probe is positioned within or adjacent a body of liquid. Thereafter, the radiation source is caused to emit radiation and the radiation sensor is utilized to sense the relative amounts of radiation reflected by the body of liquid and/or solids contained therein. The invention is applicable to any system wherein it is desirable to measure solids content or optical properties of liquids, including biological culture systems wherein it is desirable to measure the density or population of microorganisms cells within a liquid culture medium.

Method and device for measuring and controlling cell density in

A plastic coupler for a catheter assembly including a distal member for attachment to a catheter tube and having a female luer lock connector for separable interconnection with a male connector of a proximal member having a self-sealing material disposed within a through passage for injection and a outer protective cap containing a sponge saturated with an antiseptic to bathe the self-sealing material and interconnection with an antiseptic, and a method for maintaining a coupler for a catheter assembly in aseptic condition.

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Long Beach, CA, United States of America

Lisa A Tam