公开(公告)号：JP2000093508A

公开(公告)日：2000-04-04

申请号：JP27163098

申请日：1998-09-25

Applicant: TOA ELECTRONICS ,  SAITEKKU KK

Inventor： GOTSU TOSHIO ,  SHIBATA TAKESHI ,  ZOKUMA YOSHIHIRO ,  SUZUKI HIROYUKI ,  NAKAMA TOSHIYUKI

IPC: A61M1/14

Abstract: PROBLEM TO BE SOLVED: To prevent the growth of bacteria, in a dialyzate adjustment device which uses a powder granular chemical, by easily achieving sterilization using a small amount of water while using no hypochlorous acid soda and eliminating the need to add any special devices, etc. SOLUTION: Purified water is supplied to the water receiving tank 2 of a dialyzate adjustment device and heated by an existing temperature-elevating heater 3 to a temperature of about 50 to 100 deg.C at which bacteria die. The purified water heated is made to circulate through a fluid circulation circuit 2a including the water receiving tank 2 and a fluid circulation circuit 7a including a dissolving tank 7, for a required time, to sterilize the water receiving tank 2, dissolving tank 7, and liquid circuits of the device.

公开(公告)号：JPH11108917A

公开(公告)日：1999-04-23

申请号：JP28284497

申请日：1997-09-30

Applicant: TOA ELECTRONICS

Inventor： KATO EIJI ,  HAKETA YASUSHI ,  SATO TETSUYA

IPC: G01N31/16 ,  G01N27/06 ,  G01N35/00

Abstract: PROBLEM TO BE SOLVED: To obtain a titration control method in which a titration reagent is dropped always at proper intervals and in which a titration time is shortened by a method wherein the magnitude of a waiting time required for a detection by a sensor is controlled according to the magnitude of a change in the chemical quantity or the physical quantity of a solution to be inspected. SOLUTION: A pH electrode 3 as a sensor and a reference electrode 4 are inserted into a container 2 in which a solution L, to be inspected, at an automatic titration apparatus 1 is housed, and the respective electrodes 3, 4 are connected to an apparatus body 7 by respective lead wires 5, 6. Then, a titration reagent A is dropped, by every small amount, into the solution L, to be inspected, from a syringe 10, and a change in the chemical quantity or the physical quantity of the solution L to be inspected is measured by the sensor. At this time, according to the magnitude of the change in the chemical quantity or the physical quantity of the solution L, to be inspected, after a prescribed waiting time has elapsed since the titration reagent A is dropped, the magnitude of a waiting time required for a detection by the sensor after the titration reagent A is dropped next is controlled. Thereby, even when the change becomes large near the end point of a titrating operation, the end point can be detected surely, and the titrating operation can be performed with high accuracy.

公开(公告)号：JPH1189592A

公开(公告)日：1999-04-06

申请号：JP28284597

申请日：1997-09-30

Applicant: TOA ELECTRONICS

Inventor： HAKETA YASUSHI ,  KOBAYASHI KANEO

IPC: G01N21/76 ,  C12Q1/06 ,  C12Q1/66

Abstract: PROBLEM TO BE SOLVED: To provide a mensuration of ATP of microorganisms enabling to accurately measure the ATP of microorganism of a sample in biochemiluminescence by decomposing only free ATP in the sample containing free ATP in plenty such as foods, etc., utilizing ATP catabolic enzyme. SOLUTION: The microorganism contained in the sample is collected on a filter maternal by filtering sample containing the ATP decomposing reagent after decomposing free ATP in the sample containing microorganism by adding ATP decomposing reagent. The sample solution dissolving ATP decomposing reagent adhering on filtering material and the microorganism is removed by washing the filtering material with aseptic cleaning fluid. The ATP is extracted from the cells of the microorganism by applying an extracting reagent to the microorganism collected on the filtering material and the concentration of the extracted ATP of the microorganism is measured in biochemiluminescence using luciferase and luciferin.

公开(公告)号：JPH10260177A

公开(公告)日：1998-09-29

申请号：JP8604597

申请日：1997-03-19

Applicant: DAIWA CAN CO LTD ,  TOA ELECTRONICS

Inventor： YOSHIOKA TAKESHI ,  SUZUKI HISASHI ,  ISHIDA MATSUFUMI ,  MURAYAMA JIRO ,  TAKAHASHI KAZUAKI ,  NAITO KAZUTOMI ,  SODENO HIROO

IPC: G01N1/10 ,  G01N33/14

Abstract: PROBLEM TO BE SOLVED: To provide a device capable of accurately and stably analyzing the contents of a canned beverage. SOLUTION: In this device, the contents of a canned beverage 3 is sampled, and analyses are performed on a plurality of items containing at least any one of density, sugar concentration, color tone, pH, acidity, amine-form nitrogen, salinity, and vitamin C of the sampled contents. In this case, the device comprises a filtering device 5 which filters the contents sampled from the canned beverage 3 to remove solid contents and an deaerating device 6 which removes gases dissolved in the contents sampled from the canned beverage 3.

公开(公告)号：JPH09276873A

公开(公告)日：1997-10-28

申请号：JP9282796

申请日：1996-04-15

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： NOGUCHI HIROYUKI ,  HIRAI TOSHIHISA ,  SAIHARA YASUHIRO ,  URATANI YUTAKA ,  NISHIKAWA JUICHI ,  NAKANO MOTOYOSHI ,  YANAGIDA YOSHINORI ,  IKEGAYA SATOYUKI

IPC: G01N33/18 ,  C02F1/46

Abstract: PROBLEM TO BE SOLVED: To provide an electrolytic water making apparatus having function capable of stably measuring the quality of water even under a continuous water passing condition large in the quantity of water over a long time. SOLUTION: In this electrolytic water making apparatus constituted so that water is electrolyzed by applying voltage across the electrodes within an electrolytic cell not only to form alkaline water in one electrode chamber but also to form acidic water in anther electrode chamber and alkaline water and acidic water are allowed to separately flow out of the outflow ports respectively formed to the respective electrode chambers, an electrochemical water quality measuring device 11 for measuring the quality of formed electrolytic water is set on the downstream side of the electrolytic cell. This electrochemical water quality measuring device 11 is constituted of the detection electrode 20 arranged to a water inspecting chamber 18 through which water to be inspected passes, the internal electrode 16 arranged in an internal soln. chamber 14 having an internal soln. 15 sealed therein and the porous liquid communication part 17 for ensuring the water permeability between both chambers 18, 14. The internal soln. chamber 14, and a wter channel through which water to be inspected flows or a water channel through which raw water flows are allowed to communicate with each other by a communication passage 40.

公开(公告)号：JPH09257742A

公开(公告)日：1997-10-03

申请号：JP6295796

申请日：1996-03-19

Applicant: TOA ELECTRONICS

Inventor： CHO TETSUO ,  ANZAI JUNICHI ,  MOTOHASHI RYOICHI

IPC: G01N27/327 ,  C12M1/40 ,  C12Q1/26 ,  G01N27/416

Abstract: PROBLEM TO BE SOLVED: To enhance the selectivity and response to alcohol of an alcohol sensor and to stably use the sensor over a long period of time by providing a multiple layer film having avidin and biotin labelled alcohol oxidase alternately laminated thereto on the surface of a platinum electrode. SOLUTION: This alcohol sensor is constituted by providing a multiple layer film having avidin 2 and biotin labelled alcohol oxidase 3 alternately laminated thereto on the surface of a platinum electrode 1. That is, biotin 3b is added to alcohol oxidase 3a to form biotin labelled alcohol oxidase 3 and an avidin- biotin bong is utilized to form a protein layer of avidin-biotin containing alcohol oxidase 3a on the surface of the platinum electrode 1. This mechanism is based on that avidin has four bonding regions with biotin 3b and some biotins 3b are added to alcohol oxidase 3a. This sensor has a simple structure utilizing alcohol oxidase and is practical and has high reliability.

公开(公告)号：JPH0989781A

公开(公告)日：1997-04-04

申请号：JP23955095

申请日：1995-09-19

Applicant: TOA ELECTRONICS

Inventor： IGARASHI TOSHIO ,  KAWAKAMI TAKANORI

IPC: G01N31/00 ,  G01N21/78

Abstract: PROBLEM TO BE SOLVED: To provide a measuring method, for a nitrous acid ion concentration, in which nitrous acid ions can be determined simply and with high sensitivity. SOLUTION: A porphyrin compound, as a reagent, which is provided with an amino group at a porphyrin nucleus is added to, and mixed with, a sample solution which contains nitrous acid ions. The absorbance of a porphyrin compound which is provided with a diazo group generated by a reaction with the nitrous acid ions or an intensity of fluorescence at a time when the compound is excited is measured. A nitrous acid ion concentration which is contained in the sample solution is found.

公开(公告)号：JPH08285811A

公开(公告)日：1996-11-01

申请号：JP11658595

申请日：1995-04-19

Applicant: TOA ELECTRONICS

Inventor： ITO YOSHIHARU

IPC: G01N27/30 ,  G01N27/403

Abstract: PURPOSE: To provide a pressurization-type reference electrode with low manufacturing cost, excellent productivity, and high performance which can be used singly or so as to be built in a combined electrode by a method wherein the inside pressure of the reference electrode can be adjusted arbitrarily as desired and, even when a pressure is decreased while the reference electrode is used for a measurement, the reference electrode can be pressurized repeatedly. CONSTITUTION: A pressurization-type reference electrode 20 comprises a side-face packing 40 installed in such a way that it is situated on the side face of an outer tube 22 and in an upper-part air chamber 34 at an inside liquid 28 housed in the outer tube. A needle-shaped pipe 56 is pierced through the side-face packing 40 so as to be freely pierced and pulled out, and compressed air is injected into the upper-part air chamber 34 in the outer tube so as to be capable of being pressurized.

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.

公开(公告)号：JPH08233772A

公开(公告)日：1996-09-13

申请号：JP6218895

申请日：1995-02-23

Applicant: TOA ELECTRONICS ,  KAGOME KK

Inventor： KAKEFUDA YOSHIHIKO ,  ITO YOSHIHARU ,  HAYAKAWA YOSHIO ,  TAKADA TAKASHI

IPC: G01N33/02 ,  G01N27/28 ,  G01N27/416

Abstract: PURPOSE: To purge dissolved oxygen effectively by providing an inert gas introduction port for purging the gas and filling the introduction port with a porous member thereby feeding an inert gas, in the form of fine bubbles, into a sample solution. CONSTITUTION: An inert gas introduction port 30 is filled with a porous member 32. The porous member 32 is composed of an arbitrary porous material having pore diameter of 10-100μm and porosity of 30-60%. The member 32 tilting the introduction port 30 relaxes the pressure of nitrogen gas stagnating between a nitrogen gas cylinder 16 and a solenoid valve V, when it is introduced through the introduction port 30 into a measuring cell 8. Consequently, a part of sample solution in the cell 8 is prevented from being scattered through a sample injection port 6. Furthermore, nitrogen gas is injected into the sample solution in the form of fine bubbles thus purging the dissolved oxygen effectively.