GB1494831A - Methods and means for detection of micro-biological organisms and other contaminants in fluids - Google Patents

Methods and means for detection of micro-biological organisms and other contaminants in fluids

Info

Publication number
GB1494831A
GB1494831A GB34129/74A GB3412974A GB1494831A GB 1494831 A GB1494831 A GB 1494831A GB 34129/74 A GB34129/74 A GB 34129/74A GB 3412974 A GB3412974 A GB 3412974A GB 1494831 A GB1494831 A GB 1494831A
Authority
GB
United Kingdom
Prior art keywords
cells
outputs
milk
conductivity
norm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB34129/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB34129/74A priority Critical patent/GB1494831A/en
Priority to IE1707/75A priority patent/IE41893B1/en
Priority to SE7508649A priority patent/SE7508649L/en
Priority to AU83516/75A priority patent/AU8351675A/en
Priority to NL7509127A priority patent/NL7509127A/en
Priority to DE19752534423 priority patent/DE2534423A1/en
Publication of GB1494831A publication Critical patent/GB1494831A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/04—Dairy products
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J5/00—Milking machines or devices
    • A01J5/013—On-site detection of mastitis in milk
    • A01J5/0133—On-site detection of mastitis in milk by using electricity, e.g. conductivity or capacitance
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J7/00—Accessories for milking machines or devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Electrochemistry (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Food Science & Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiology & Medical Imaging (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

1494831 Measuring conductivity of milk D D A FRASER 2 Feb 1975 34129/74 Heading G1N Contaminated fluid, e.g. milk from a mastitis infected animal is detected by passing the fluid from different sources e.g. teats between the electrodes of separate conductivity cells, electrically energizing the cells, comparing the outputs of all cells with each other and detecting any differences. The electrical outputs may also be compared with a reference representing a healthy animal. Conductivity cells 2 mounted in the claw 1 of a milking machine are fed from oscillator 3 with 2À5 KHz A.C. The cell outputs are all compared by circuits AB-CD and, if any difference is found, a warning lamp 12R is illuminated. A "norm" is established for a milk sample from a healthy animal by adjusting potentiometer 4. Comparator 5, which includes a signal lamp then indicates if the conductivity of the milk varies from a norm, even if the outputs of all cells are the same. The comparators AB-CD each comprise a differential amplifier and a bi-stable circuit connected to the comparator output by a variable resistor which alters the trigger level permitting compensation for differences in cell parameter.
GB34129/74A 1974-08-02 1974-08-02 Methods and means for detection of micro-biological organisms and other contaminants in fluids Expired GB1494831A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB34129/74A GB1494831A (en) 1974-08-02 1974-08-02 Methods and means for detection of micro-biological organisms and other contaminants in fluids
IE1707/75A IE41893B1 (en) 1974-08-02 1975-07-30 Improvements in methods and means for detection of microbiological organisms and other contaminants in fluids
SE7508649A SE7508649L (en) 1974-08-02 1975-07-30 PROCEDURE AND DEVICE FOR EXAMINATION OF VETSKOR
AU83516/75A AU8351675A (en) 1974-08-02 1975-07-30 Detection of microbial organisms
NL7509127A NL7509127A (en) 1974-08-02 1975-07-31 METHOD AND DEVICE FOR THE DETECTION OF MICROBIOLOGICAL ORGANISMS.
DE19752534423 DE2534423A1 (en) 1974-08-02 1975-08-01 METHOD AND DEVICE FOR DETECTING DIFFERENCES IN POLLUTION IN A LIQUID FROM SPACIOUSLY SEPARATE SOURCES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34129/74A GB1494831A (en) 1974-08-02 1974-08-02 Methods and means for detection of micro-biological organisms and other contaminants in fluids

Publications (1)

Publication Number Publication Date
GB1494831A true GB1494831A (en) 1977-12-14

Family

ID=10361741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34129/74A Expired GB1494831A (en) 1974-08-02 1974-08-02 Methods and means for detection of micro-biological organisms and other contaminants in fluids

Country Status (6)

Country Link
AU (1) AU8351675A (en)
DE (1) DE2534423A1 (en)
GB (1) GB1494831A (en)
IE (1) IE41893B1 (en)
NL (1) NL7509127A (en)
SE (1) SE7508649L (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123959A (en) * 1982-07-13 1984-02-08 Ray Vaughan Milk abnormality testing aid
GB2257008A (en) * 1991-04-30 1993-01-06 Sidney William Simpson Sub-clinical mastitis detector and excluder.
US5416417A (en) * 1991-05-08 1995-05-16 S.A.E. Afikim Method and system for investigating mastitis of a cow by measuring electrical conductivity of milk
GB2276069B (en) * 1992-10-09 1996-09-25 Atomic Energy Authority Uk Apparatus for and method of milking an animal
US5664521A (en) * 1992-10-09 1997-09-09 Tickleford Limited Apparatus for and method of milking an animal
WO2014078815A1 (en) * 2012-11-16 2014-05-22 Indicator Systems International, Inc. Electrochemical determination of infection
CN112858313A (en) * 2021-01-14 2021-05-28 内蒙古农业大学 Sheep milk adulteration detection device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513842A (en) * 1978-07-14 1980-01-31 Eisai Co Ltd Check unit for milking of udders
DE3366234D1 (en) * 1982-06-08 1986-10-23 Ahern Michael John Sampling device for use in the sampling of biological fluids
DE3308361A1 (en) * 1983-03-09 1984-09-13 WTW Wissenschaftlich-technische Werkstätten GmbH, 8120 Weilheim Measuring cell for determining the electrolytic conductivity of milk
HU193794B (en) * 1985-07-30 1987-11-30 Mezoegazdasagi Foeiskola Method and apparatus for diagnosing mastitis
DE4007327C1 (en) * 1990-03-08 1991-07-11 Lang Apparatebau Gmbh, 8227 Siegsdorf, De

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123959A (en) * 1982-07-13 1984-02-08 Ray Vaughan Milk abnormality testing aid
GB2257008A (en) * 1991-04-30 1993-01-06 Sidney William Simpson Sub-clinical mastitis detector and excluder.
GB2257008B (en) * 1991-04-30 1994-11-09 Sidney William Simpson Sub clinical mastitis detector and excluder
US5416417A (en) * 1991-05-08 1995-05-16 S.A.E. Afikim Method and system for investigating mastitis of a cow by measuring electrical conductivity of milk
GB2276069B (en) * 1992-10-09 1996-09-25 Atomic Energy Authority Uk Apparatus for and method of milking an animal
US5664521A (en) * 1992-10-09 1997-09-09 Tickleford Limited Apparatus for and method of milking an animal
WO2014078815A1 (en) * 2012-11-16 2014-05-22 Indicator Systems International, Inc. Electrochemical determination of infection
CN112858313A (en) * 2021-01-14 2021-05-28 内蒙古农业大学 Sheep milk adulteration detection device

Also Published As

Publication number Publication date
DE2534423A1 (en) 1976-02-12
SE7508649L (en) 1976-02-03
NL7509127A (en) 1976-02-04
IE41893L (en) 1976-02-02
IE41893B1 (en) 1980-04-23
AU8351675A (en) 1977-02-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728R Application refused (sect. 28/1977)
728B Application made to the patents court (sect. 28/1977)
728T Application made to the patents court ** appeal allowed (sect. 28/1977)
728A Order made restoring the patent (sect. 28/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940202