公开(公告)号：JPH10151462A

公开(公告)日：1998-06-09

申请号：JP31533996

申请日：1996-11-26

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

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

IPC: G01N27/416 ,  C02F1/46

Abstract: PROBLEM TO BE SOLVED: To provide an electrolytic water forming apparatus which can perform measurement of quality of water without receiving any influence caused by adhesion of air bubbles to an acting electrode and stably. SOLUTION: This electrolytic water forming apparatus is formed by providing an electrolytic tank wherein alkaline water and acidic water are formed by electrolysis of water and these formed alkaline and acidic electrolytic waters are separately made to flow out and a water quality measuring device 20 which is arranged on the downstream side of the electrolytic tank and measures electrochemically the quality of water of the electrolytic tank. A water examining part 17 through which electrolytic water passes, an acting electrode part 28 whose bottom part is arranged by facing to the water examining part 17, a sealing part 18 for sealing the inner soln. 16, a comparative electrode part 21 arranged in the sealing part 18 and a porous liq. communicating part 22 between the water examining part 17 and the sealing part 18 are provided to form a water quality measuring device 20. In addition, the bottom part in the water examining part 17 of the acting electrode part 28 is formed into a projected shape.

公开(公告)号：JPH10142193A

公开(公告)日：1998-05-29

申请号：JP30209096

申请日：1996-11-13

Applicant: TOA ELECTRONICS

Inventor： GOTO RYOZO ,  SASAKURA MITSURU ,  HARADA YASUYUKI

IPC: G01N27/416

Abstract: PROBLEM TO BE SOLVED: To simpl and stably measure a concentration of each substance related to a biological reaction, a biochemical reaction or a chemical reaction with the use of common electrodes and apparatus without using special electrodes and apparatus for each substance. SOLUTION: A sample solution including a substance to be measured is borough into contact with a film 7 or column holding a labile substance which generates a pH change through a biological, biochemical or chemical reaction with the substance to be measured. A potential difference of two pH-sensing electrodes 5, 6 soaked in the sample solution before and after the touch in the liquid junction state is measured. The obtained potential difference is compared with a potential difference preliminary measured for a solution including the substance to be measured of a known concentration. A concentration of the substance to be measured in the sample solution is obtained in the method.

公开(公告)号：JPH09210951A

公开(公告)日：1997-08-15

申请号：JP33158396

申请日：1996-11-26

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  TOA ELECTRONICS

Inventor： IKEGAYA SATOYUKI ,  YANAGIDA YOSHINORI ,  SAIHARA YASUHIRO ,  NISHIKAWA JUICHI ,  NOGUCHI HIROYUKI ,  NAKANO MOTOYOSHI

IPC: G01N27/38 ,  C02F1/46 ,  G01N27/416

Abstract: PROBLEM TO BE SOLVED: To establish a washing method for an oxidative/reductive potential sensor, which can perform washing safely. SOLUTION: A working electrode 2 of non-soluble metal of an oxidative/ reductive potential sensor 1 is subjected to treatments with a strong acid water L1 containing dissolved chlorine, a weal acid water L2 containing dissolved oxygen, and strong alkali water L3 containing dissolved hydrogen in the sequence as named, thereby washing the surface of the working electrode 2 with no use of any washing liquid having toxicity.

公开(公告)号：JPH0947489A

公开(公告)日：1997-02-18

申请号：JP23314695

申请日：1995-08-09

Applicant: TOA ELECTRONICS ,  CYTEC KK

Inventor： ZOKUMA YOSHIHIRO ,  SHIBATA TAKESHI

IPC: A61J3/00 ,  A61M1/14

Abstract: PROBLEM TO BE SOLVED: To prevent chemical for sticking to the inside of a protection cylinder by mounting an adapter made of material having a form achieving partitioning effect and such characteristics that powder does not stick thereto and moisture is not absorbed therein. SOLUTION: To an end of charging cylinder 1 of a protection cylinder 5, an adaper is fixed by means of a band 4 so that a charging port 2 is covered therewith. This adapter 3 is formed of a material to which powdery medicines are hard to stick and which does not absorb moisture. Through the adaper 3, to shut out air flow to the inside of the cylinder 5, the speed of air thereinto is weakened and thereby the force of air applied to the powdery medicines dropping inside of it is weakened. Accordingly, a powdery medicine made to flow downstream or rotate is dreduced and the sticking thereof to the inside of the cylinder 5 is restrained.

公开(公告)号：JPH0915144A

公开(公告)日：1997-01-17

申请号：JP16727895

申请日：1995-07-03

Applicant: TOA ELECTRONICS ,  FUJI ELECTRIC CO LTD

Inventor： SEKINE AKIFUMI ,  HOSODA SEIICHI ,  YAMADA KOJI ,  TOYAMA FUMIO ,  INOUE KOHEI ,  AOKI TAKASHI ,  HARADA KENJI

IPC: G01N21/15 ,  G01N21/27 ,  G01N21/49

Abstract: PROBLEM TO BE SOLVED: To clean the inside of a measuring cell surely and easily by composing the inner surface of a measuring cell of a tubular optical glass and wiping the inner surface of glass in the circumferential direction by means of a wiper. SOLUTION: The inner surface of a measuring cell 1 is composed of a tubular optical glass 11 and an measuring optical path 10 is set in the diametrical direction substantially at the central position of tube. A wiper unit 5 comprises a wiper rubber ring 52 touching the inner surface in the circumferential direction of tubular glass 11, a wiper support 51, and a wiper drive shaft 53 for driving the rubber ring 52 in the axial direction of tube (shown by an arrow). When the inner surface of glass 11 is contaminated with water to be inspected, the water to be inspected or a zero liquid is used as a cleaning liquid and the wiper unit 5 is driven to reciprocate the circular rubber ring 52 in the axial direction of the glass 11 of cell 1 while touching the inner surface there with a predetermined pressure thus removing the contaminants. Since no level difference is present on the inner surface of glass 11, it can be cleaned easily.

公开(公告)号：JPH08145937A

公开(公告)日：1996-06-07

申请号：JP31558794

申请日：1994-11-25

Applicant: TOA ELECTRONICS

Inventor： ITO YOSHIHARU

IPC: G01N27/30 ,  G01N27/403

Abstract: PURPOSE: To provide high performance pressurized complex electrodes which do not require compressed air supply source and compressed air supply piping device for producing and special trained worker, and is cheap in production cost and has good productivity. CONSTITUTION: A pressurized complex electrode 1 is provided with comparison electrode 6 around a measuring electrode 2 and an annular packing 28 attached with an inner electrode 24 is inserted with pressure from the upper open end of the annular room 20 of the comparison electrode 6 to the inside so that the air in the annular room 20 above the inside liquid is compressed to pressurize.

公开(公告)号：JPH08101159A

公开(公告)日：1996-04-16

申请号：JP25967394

申请日：1994-09-30

Applicant: TOA ELECTRONICS

Inventor： KATO AKIHIKO ,  YAMASATO MASAHARU ,  TAGUCHI TOMIO ,  KATSUBE TERUAKI

IPC: G01N27/30

Abstract: PURPOSE: To provide a pH measuring electrode which uses iridium oxide as a pH sensitive film, is constructed small and sturdily, easy to manufacture, presents easiness in working, excels in the resistance against chemicals, has a wide pH range measurable, and which can measure not only liquid but also the surface or inside of a solid matter and also can make measurement stably for a long period of time. CONSTITUTION: The pH measuring electrode 1 includes an insulative supporting member 42 in a thin and long shape and a pH sensitive part 2 fixed to one end of the supporting member 42 in contact with an object to be measured while exposing only its end plane part substantially to the outside. The part 2 has a rod 28 of insulative ceramic whose one end 28a is shaped in to a plane, and the surface of the rod 28 is subjected to a specular finish so that at least the surface roughness is Rmax 0.02 and Ra 0.002, and thereover, an iridium oxide film 22 is formed whose iridium-oxygen proportion ranges 1:2.5 to 1:3.5, and further a porous insulative film 23 is formed covering at least a part of the peripheral circumferential surface and the end plane where the iridium oxide film 22, is provided.

公开(公告)号：JPH07306174A

公开(公告)日：1995-11-21

申请号：JP12049094

申请日：1994-05-10

Applicant: TOA ELECTRONICS

Inventor： KONNO HIROKO ,  NAKANO TAISUKE

IPC: G01N27/401 ,  G01N27/30 ,  G01N27/416

Abstract: PURPOSE:To provide a comparison electrode system in which a sample solution sucked through a suction nozzle is mixed uniformly with a comparison inner or outer liquid while preventing contamination due to dripping of the comparison inner or outer liquid through the nozzle into the sample solution. CONSTITUTION:A level difference part is provided in the way of a channel 10 of sucked sample solution including a suction nozzle 8 in order to partition the vertically extending part immediately below a confluence 11 within a cell 14. The extending part is formed at a mixing part 17 of the sample solution and a comparison outer liquid 6 and the level difference part itself serves as a part 18 for blocking migration of the comparison outer liquid 6 in the forward end direction of the nozzle 8. Consequently, the comparison outer liquid 6 does not migrate in the forward end direction of the nozzle 8 but flows, as a turbulence, back to the mixing part 17 and mixed uniformly with the solution.

公开(公告)号：JPH07275354A

公开(公告)日：1995-10-24

申请号：JP10888794

申请日：1994-04-13

Applicant: TOA ELECTRONICS ,  SCITEC KK

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

IPC: A61M1/14

Abstract: PURPOSE:To provide a device which automatically makes medical fluid for a blood dialyser from powder drug using an electrical conductivity meter as a detector for the concentration of solution. CONSTITUTION:Powder drug is supplied from a dissolving water and drug A supplier 3 to a dissolving section 4, the temperature of solution is maintained at above 20 deg.C with a heater 2, the concentration of the solution is continuously detected by a concentration detector 1, the supplying amount of the powder drug is controlled, and a specified concentration of medical fluid is obtained.

公开(公告)号：JPH0783908A

公开(公告)日：1995-03-31

申请号：JP25013293

申请日：1993-09-10

Applicant: TOA ELECTRONICS

Inventor： YOTSUYANAGI TAKAO ,  HOSHINO HITOSHI ,  NOMURA TAKASHI

IPC: G01N30/06 ,  G01N30/74 ,  G01N30/88

Abstract: PURPOSE:To relatively simply determine a small amount of beryllium with an extremely high sensitivity by setting sample ion as a non-dissociation com plex by a specific complex reagent and then' isolating and analyzing the sample liquid containing the complex using liquid chromatography. CONSTITUTION:1-(2,4-dihydroxy-phenylazo)-8-hydroxy-3,6 disulfonaphthalene, or 1-(2-hydroxy-4-diethylamlno 1-phenylazo)-8-hydroxy-3,6-disulfonaphthalene is used as a complex reagent. These two types of complex reagents creates two 6-member rings incorporating beryllium ion and form a complex. The sample liquid containing the complex is injected into the column, the complex is isolated and analyzed by liquid chromatography, and then beryllium concentration is determined. It is desirable to used kinetics discrimination(KD) - HPLC as the HPLC(high performance liquid chromatography) most suited for ultra- high-sensitivity detection of beryllium and beryllium can be determined with the ultra high sensitivity of PPt level.