Automatic chemistry analyzer

Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Sample mechanical transport means in or for automated...

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Details

204407, 204411, 422104, G01N 27403, G01N 3508

Patent

active

052137627

ABSTRACT:
An automatic chemistry analyzer includes a flow cell mounted so that flow through the cell and tubing connected to the cell is visible from the front of the housing. The electrolytes to the cell are removably plugged into the cell from their rear. The probe aspirating sample fluid into an injection cell is simultaneously washed by diluent and the diluent mixes with the fluid sample. Waste fluid from the flow cell is fed to a basin which then feeds under gravity to a waste drain. A ratio pump is formed by selected syringes which are band driven to deliver accurately prerequisite volumes of reagents to the flow cell. The solution ground to the system is on the inlet line for sample adjacent the entrance to the flow cell of fluid thereby minimizing electronic noise. Only two motive means are necessary, one to effect horizontal and rotational movement of the sample tray, and a second to effect vertical motion of a crane mounted probe operative between sample cups and an injection cell.

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System E4A Operating Manual, Beckman Instruments, Inc., Clinical Instruments Division, Brea, Calif., Section Three, Principles of Operation, p. 3-1 through 3-8.
IBM Technical Disclosure Bulletin dated Nov., 1983, vol. 26, No. 6.

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