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    5.
    发明专利
    未知

    公开(公告)号：DK155765C

    公开(公告)日：1989-10-23

    申请号：DK263576

    申请日：1976-06-11

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BUZZA EDMUND E ,  STERNBERG JAMES C

    IPC: G01N27/416 ,  G01N33/487 ,  G01N33/49 ,  G01N27/28

    Abstract: Apparatus for measuring carbon dioxide and chloride in blood. A blood sample is reacted with acid in a sample container to release carbon dioxide, a portion of which diffuses through a gas-permeable membrane and reacts with an electrolyte to change the pH thereof. A pair of pH measuring electrodes monitor the electrolyte pH at respective locations adjacent to and remote from the region of reaction within the electrolyte. The pH electrodes are coupled to respective input terminals of a differential amplifier to derive a differential pH signal. The differential pH signal is differentiated to derive a rate of change of pH output signal which is measured to indicate the concentration of carbon dioxide. The pH measuring electrodes are in electrolytic communication and means is provided to renew the electrolyte between measurements. Coulometric measurement of chloride in the sample is performed simultaneously with the carbon dioxide measurement.

    6.
    发明专利
    未知

    公开(公告)号：DK155765B

    公开(公告)日：1989-05-08

    申请号：DK263576

    申请日：1976-06-11

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BUZZA EDMUND E ,  STERNBERG JAMES C

    IPC: G01N27/416 ,  G01N33/487 ,  G01N33/49 ,  G01N27/28

    Abstract: Apparatus for measuring carbon dioxide and chloride in blood. A blood sample is reacted with acid in a sample container to release carbon dioxide, a portion of which diffuses through a gas-permeable membrane and reacts with an electrolyte to change the pH thereof. A pair of pH measuring electrodes monitor the electrolyte pH at respective locations adjacent to and remote from the region of reaction within the electrolyte. The pH electrodes are coupled to respective input terminals of a differential amplifier to derive a differential pH signal. The differential pH signal is differentiated to derive a rate of change of pH output signal which is measured to indicate the concentration of carbon dioxide. The pH measuring electrodes are in electrolytic communication and means is provided to renew the electrolyte between measurements. Coulometric measurement of chloride in the sample is performed simultaneously with the carbon dioxide measurement.

    7.
    发明专利
    未知

    公开(公告)号：MX154450A

    公开(公告)日：1987-08-27

    申请号：MX18690281

    申请日：1981-04-15

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BUZZA EDMUND E

    IPC: G01N1/00 ,  G01N1/38 ,  G01N35/10 ,  F16K11/02 ,  G01N35/08

    Abstract: A liquid transfer valve including movable valve portions. A second valve portion (14) is movable with respect to a first valve portion (12) to allow a probe (11) to extend therethrough to pick up a sample liquid (18). Upon probe retraction, the second valve portion (14) is movable to a position which allows the sample liquid to be injected into the valve where it is diluted and carried to a remote detector or delivery point.

    SAMPLE HANDLING SYSTEM
    10.
    发明专利
    SAMPLE HANDLING SYSTEM 未知

    公开(公告)号：CA1303949C

    公开(公告)日：1992-06-23

    申请号：CA541718

    申请日：1987-07-09

    Applicant: BECKMAN INSTRUMENTS INC

    Inventor： BUZZA EDMUND E ,  JACKSON DELBERT D

    IPC: G01N1/00 ,  G01N35/10 ,  G01N35/06

    Abstract: 101D-200 Canada SAMPLE HANDLING SYSTEM A sample handling system including a sample injection cell having an open chamber in turn comprising an upper portion for washing a sample handling probe and a lower portion adapted to receive the probe for injection of a sample and fluid mixture into a flow analysis device. The cell enables the probe to be withdrawn from the cell and moved to other analysis modules for injection of sample therein. The cell includes a seal between the upper portion and lower portion of the chamber and the probe includes a mating seal near the tip of the probe. A plurality of conduits are formed into the cell for flowing sample and a fluid such as diluent through the cell to a flow analysis device and for filling the cell for washing the probe tip.

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