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    FILTER
    1.
    发明专利
    FILTER 失效

    公开(公告)号：JPH08257318A

    公开(公告)日：1996-10-08

    申请号：JP9183795

    申请日：1995-03-24

    Applicant: TOA ELECTRONICS

    Inventor： HAKETA YASUSHI ,  IBUKI TADAHIRO

    IPC: G01N1/10 ,  B01D29/01 ,  B01L99/00 ,  B01L11/00

    Abstract: PURPOSE: To provide an inexpensive filter capable of perfectly eliminating the contamination with various bacteria between samples even when a large number of samples are examined, enhanced in work efficiency and used in the examination of bacteria. CONSTITUTION: A filter 1 has a membrane filter M and a filter stand 20 holding a porous filter support 30 capable of holding the filter membrane M on the upper surface thereof in a freely detachable manner. The filter stand 10 is held on a filter stand holder 10 in a freely detachable manner. A holder 40 for storing a sample is attached to the filter stand holder 10 in a freely detachable manner through the filter stand 20.

    PH MEASURING APPARATUS AND METHOD FOR CALIBRATING THE SAME
    3.
    发明专利
    PH MEASURING APPARATUS AND METHOD FOR CALIBRATING THE SAME 失效

    公开(公告)号：JPH05133927A

    公开(公告)日：1993-05-28

    申请号：JP32386191

    申请日：1991-11-11

    Applicant: TOA ELECTRONICS

    Inventor： NAKAMURA YOSHIAKI ,  IBUKI TADAHIRO ,  SATO TETSUYA

    IPC: G01N27/26 ,  G01N27/416

    Abstract: PURPOSE:To simply and correctly calibrate a pH measuring apparatus with a standard solution which has not been stored in an apparatus memory. CONSTITUTION:A keyboard 19 is used to input a pH-temperature characteristic table of desired standard solution into a microprocessor 15 and this is stored in a RAM 18. Then the standard solution is injected into an appropriate vessel such as a beaker, temperature of the standard solution is measured by an appropriate temperature sensing means, the temperature is converted into a digital signal to be supplied to the microprocessor 15, a pH value of the standard solution corresponding to the measured temperature is taken out from the RAM 18 into the microprocessor 15, and the pH value is used to automatically calibrate a pH measuring apparatus to calculate asymmetry potential, slope, etc. Thus standard solution calibration is always performed correctly even if there is change in temperature.

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