1
Warren J Heath, Rene J Langner, Kermit W Jones, Charles A Bell: Automatic multiple-sample multiple-reagent chemical analyzer. Precision Systems, Hamilton Brook Smith & Reynolds, July 20, 1993: US05229074 (80 worldwide citation)

An analyzer for chemical assays includes a turntable which supports sample containers and reagent containers within a cooled volume and test cells about the periphery of the cooled volume. A probe is carried by a rotating arm for withdrawing liquid from the containers and dispensing the liquid. Fixe ...


2
Charles A Bell, Warren J Heath, Norman M Kleinman: Automatic multiple-sample multiple-reagent chemical analyzer. Precision Systems, Hamilton Brook Smith & Reynolds P C, September 29, 1998: US05814277 (73 worldwide citation)

An analyzer for chemical assays includes a turntable which supports sample containers and reagent containers within a cooled volume and test cells about the periphery of the cooled volume. A probe is carried by a rotating arm for withdrawing liquid from the containers and dispensing the liquid. Fixe ...


3
Warren J Heath, Rene J Langner, Charles A Bell: Process environment monitoring system. Precision Systems, November 26, 1991: US05068798 (22 worldwide citation)

A process environment monitoring system collects and tests air samples from a number of different sample locations. Each sample is drawn into a sample test chamber into which a beam of infrared light is directed from an infrared source. The beam is reflected off mirrors in the test chamber a number ...


4
Charles A Bell, Warren J Heath, Norman M Kleinman: Automatic multiple-sample multiple-reagent dispensing method in chemical analyzer. Precision Systems, Hamilton Brook Smith & Reynolds P C, January 28, 1997: US05597733 (21 worldwide citation)

An analyzer for chemical assays includes a turntable which supports sample containers and reagent containers within a cooled volume and test cells about the periphery of the cooled volume. A probe is carried by a rotating arm for withdrawing liquid from the containers and dispensing the liquid. Fixe ...


5
Robert L Scott, Samuel Nejame Jr, Charles S Jacobs Jr, Charles A Bell: Fluorometric titrator. October 9, 1984: US04476095 (11 worldwide citation)

A fluorometric titrator has means to transfer a pipette between first and second positions and a buret for a chelating agent has a reversible drive powered either by a pulse generator or an oscillator. Valve controlled means are operable to place the buret in communication with the pipette or a rese ...


6
Warren J Heath, Rene J Langner, Charles A Bell: Process environment monitoring system. Precision Systems, Hamilton Brook Smith & Reynolds, September 19, 1995: US05452234 (9 worldwide citation)

A process environment monitoring system collects and tests air samples from a number of different sample locations. Each sample is drawn into a sample test chamber into which a beam of infrared light is directed from an infrared source. The beam is reflected off mirrors in the test chamber a number ...


7
Warren J Heath, Rene J Langner, Charles A Bell: Process environment monitoring system. Precision Systems, Hamilton Brook Smith & Reynolds, December 14, 1993: US05270945 (9 worldwide citation)

A process environment monitoring system collects and tests air samples from a number of different sample locations. Each sample is drawn into a sample test chamber into which a beam of infrared light is directed from an infrared source. The beam is reflected off mirrors in the test chamber a number ...


8