公开(公告)号：JPS5666749A

公开(公告)日：1981-06-05

申请号：JP14268979

申请日：1979-11-02

Applicant: KYOWA HAKKO KOGYO KK ,  TOA ELECTRONICS

Inventor： SAKADO KUNIAKI ,  TANAKA HISAO ,  MOTOHASHI RIYOUICHI

IPC: C12M1/34 ,  G01N27/416

Abstract: PURPOSE:To simply and quickly measure the activity of animal/botanical tissue, by contacting the electrode or constant potential device to culture solution and measuring the current or voltage produced where animal/botanical tissue reacts with the electrode or constant potential device. CONSTITUTION:Electrodes 9, 10 incorporate and anode 3 and an anode solution 8 and have a connection lead 4 to contact with external liquid. One electrode 10 in which the platinum electrode 5 exposed is covered with an animal/botanical tissue opaque membrane 6 is an electrode to measure the electrode active substance other than the animal/botanical tissue present in fermentation liquid. The fermentation liquid of animal/botanical tissue or electrode active substance is in contact with the cathode 5 of the electrode 9 to produce a current or voltage. On the other hand, the electrode active substance only in also in contact with the cathode 5 of the electrode 10 to produce a current or potential. The difference of currents or potentials from two electrodes 9 and 10 very much corresponds to the number of cells and activity of animal/botanical tissue measured separately. Accordingly, the activity of animal/bontanical tissue can be measured.

公开(公告)号：JPS5559324A

公开(公告)日：1980-05-02

申请号：JP13338278

申请日：1978-10-30

Applicant: FUJI ELECTRIC CO LTD ,  TOA ELECTRONICS

Inventor： TSUKINO KAZUO ,  SUGA SHIGENARI ,  TOYAMA FUMIO ,  IZU TOSHIO ,  HATA KENJIROU ,  MINAMIMOTO ITARU

IPC: G01N1/00

Abstract: PURPOSE:To facilitate and easy modification as well as to realize a long-time reservation for the calibration checking standard solution of the iodine substitution type polarograph-system chlorine gauge which measures the residual chlorine in the water process system, by using the oxidizing agent which oxidizes the iodine ion and the acid which gives a fixed pH in combination. CONSTITUTION:The calibration checking standard solution for the iodine substitution type polarograph-system residual chlorine gauge is produced by mixing the oxidizing agent which liberates the iodine through oxidization of the iodine ion and the acid (such as the sulfuric acid, nitric acid, etc.) of such amount as to secure pH1.5-3.0 when mixed with the active reagent at introduction into the residual chlorine gauge. The oxidizing agent uses the sodium iodate, potassium iodate, potassium dichromate and the like, and is modified previously up to the 1-1000- fold density compared with the introduction time into the residual chlorine gauge. And in the case of the bromine substitution type polarograph-system liberation chlorine gauge, the potassium salt of bromic acid or the sodium salt is used for the oxidizing agent.

公开(公告)号：JPS5162646A

公开(公告)日：1976-05-31

申请号：JP13616774

申请日：1974-11-29

Applicant: Toa Electronics

Inventor： ENDO HAJIME

IPC: H03B28/00 ,  H03K4/02 ,  H03K4/92 ,  H03K5/15

公开(公告)号：JPS5141814A

公开(公告)日：1976-04-08

申请号：JP11477274

申请日：1974-10-07

Applicant: TOA ELECTRONICS

Inventor： YAMANAKA NORYUKI

IPC: H02P8/28 ,  H02P8/00

公开(公告)号：JPH10253572A

公开(公告)日：1998-09-25

申请号：JP7054697

申请日：1997-03-07

Applicant: TOA ELECTRONICS

Inventor： HARADA YASUYUKI ,  KATO AKIHIKO

IPC: G01N27/30

Abstract: PROBLEM TO BE SOLVED: To dispense with setting of a value of calibration or correction at every time of replacement of an electrode and to enable free and proper use of electrodes for different purposes, by providing a storage means for the information on a measuring electrode in the measuring electrode or in a cable or a connector for connecting the measuring electrode to a device main body. SOLUTION: A type name and a serial number of an electrode given at the time of manufacture thereof are inputted as the information (data) on the electrode to a memory in the electrode 10, for instance, and calibration data are written therein at the time of inspection of the electrode. A means for reading and storing the information stored in the memory of the measuring electrode 10 is provided in a device main body 20 and also a means for writing the fresh calibration data and others in the memory of the measuring electrode 10 is provided therein. The device main body 20 corrects a pH value by computation on the basis of the calibration data read in and a potential obtained from a pH sensing part 11 of the measuring electrode 10 and displays it as a measured pH value. In a measuring device equipped with a printer, printing can also be executed as occasion demands.

公开(公告)号：JPH10192393A

公开(公告)日：1998-07-28

申请号：JP106897

申请日：1997-01-08

Applicant: TOA ELECTRONICS ,  CYTEC KK

Inventor： GOTSU TOSHIO ,  SHIBATA TAKESHI

IPC: A61M1/14

Abstract: PROBLEM TO BE SOLVED: To provide a blood leakage detection method capable of surely detecting the blood leakage into the dialyzate of a blood dialysis apparatus even if a high-sensitivity blood leakage detector is not used. SOLUTION: In the method for detecting the blood leaking into the dialyzate through the defect part, etc., of a semipermeable membrane 1a from the dialyzer 1 of the blood dialysis apparatus, a blood leakage detector 9 is arranged in a drainage circuit 6 for the dialyzate from the dialyzer 1 and the blood leakage in the dialyzate is detected in the state of decreasing the flow rate of the dialyzate flowing the drainage circuit 6 by regulating a liquid feed pump 5, a liquid drain pump 7 and a liquid removing pump 8.

公开(公告)号：JPH10165200A

公开(公告)日：1998-06-23

申请号：JP34058196

申请日：1996-12-05

Applicant: TOA ELECTRONICS

Inventor： HAKETA YASUSHI ,  KOBAYASHI KANEO

IPC: G01N21/78 ,  C12Q1/66

Abstract: PROBLEM TO BE SOLVED: To provide a method for assaying microbial ATP, capable of efficiently and accurately conducting a microbial assay for a sample rich in free ATP in a short time. SOLUTION: This method for microbial ATP assay is characterized by that an ATP-decomposing reagent is added to a sample rich in free ATP not derived from microorganism to decompose the free ATP in the sample followed by adding an ATP-extractive reagent to the resultant sample to extract ATP from the microorganisms. At this time, simultaneously, the extractive reagent deactivates the ATP-decomposing reagent added to the sample previously, and subsequently, a luminescent reagent containing a reagent suppressing the inhibition of an enzymatic reaction is brought into contact with the resultant sample, and the light generated by biological chemiluminescent reaction is assayed with a relevant device.

公开(公告)号：JPH09166454A

公开(公告)日：1997-06-24

申请号：JP34770295

申请日：1995-12-15

Applicant: TOA ELECTRONICS

Inventor： SATO TETSUO

IPC: G01D9/00

Abstract: PROBLEM TO BE SOLVED: To provide an easy-to-operate pen recorder where an input part for receiving a measurement signal is formed in a unit, which can be miniaturized and expanded to have input parts more than the number of pen recording devices, and where a signal from any input unit can be recorded with a pen. SOLUTION: The pen recorder has an input unit 10 for receiving a measurement signal and a device body 100 where a plurality of slots for detachably placing the input unit 10 are formed. The input unit 10 has an amplifier 11, an A/D converter 12, and a sub controller 13 for processing a signal from the A/D converter 12, creating a measurement signal for display and a measurement signal for pen recording, transmitting the signals to a main controller 20 installed at the device body 100, and at the same time, performing communication control with the main controller 20. The device body 100 has a display device 50 and a memory device 60 and measurement data recorded at the memory device 60 can be recorded and reproduced at need by a pen recording device 30.

公开(公告)号：JPH0980009A

公开(公告)日：1997-03-28

申请号：JP26353695

申请日：1995-09-18

Applicant: TOA ELECTRONICS

Inventor： YANAGIDA YOSHINORI ,  NAKANO TAISUKE

IPC: G01N27/30 ,  G01N9/12 ,  G01N27/403

Abstract: PROBLEM TO BE SOLVED: To obtain an always-stable single-pole potential by easily detecting the renewing timing of the internal solution of a reference electrode by simply detecting the concentration change of the internal solution. SOLUTION: A small plastic piece 40 is put in the internal solution 31 of a reference electrode 30 as a material used for detecting the specific gravity change of the solution 31. The solution 31 is renewed by confirming the contaminated state of the solution 31 by detecting the position of the plastic piece 40 in the solution. Therefore, an always-stable single-pole potential can be obtained.

公开(公告)号：JPH07229871A

公开(公告)日：1995-08-29

申请号：JP4302994

申请日：1994-02-17

Applicant: TOA ELECTRONICS

Inventor： OIKAWA KIKUO ,  MOTOHASHI RYOICHI ,  UCHIYAMA ETSUO

IPC: G01N27/416

Abstract: PURPOSE:To measure the concn. of an oxochlorine compd. such as dissolved chlorine dioxide using a membrane-coated electrode of a diaphragmn type polarograph electrode method or a galvanic cell type membrane-coated electrode without receiving the effect of the contamination or solvent of a soln. causing the deterioration or damage of the membrane-coated electrode. CONSTITUTION:The coating membrane 6 of a membrane-coated electrode of a diaphragmn type polarograph electrode method or a galvani cell type membrane coated electrode is exposed to the vapor phase 4 being in contact with the sample soln. in a container 2 airtightly isolated from the outside and chlorine dioxide in the vapor phase reaching diffusion equilibrium with respect to the sample soln. 1 is measured and, from the correlation between the preliminarily experimentally calculated concn. of chlorine dioxide dissolved in the sample soln. 1 and the concn. of chlorine dioxide in the vapor phase 4 held to a diffusion equilibrium state with respect to the soln. 1, the concn. of chlorine dioxide dissolved in the sample soln. 1 is calculated.