FR2097329A5 - Automatic photometric indentification of bacteria - eg by following the course of a colour reaction - Google Patents

Automatic photometric indentification of bacteria - eg by following the course of a colour reaction

Info

Publication number
FR2097329A5
FR2097329A5 FR7024562A FR7024562A FR2097329A5 FR 2097329 A5 FR2097329 A5 FR 2097329A5 FR 7024562 A FR7024562 A FR 7024562A FR 7024562 A FR7024562 A FR 7024562A FR 2097329 A5 FR2097329 A5 FR 2097329A5
Authority
FR
France
Prior art keywords
bacteria
reaction
course
signal
indentification
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
FR7024562A
Other languages
French (fr)
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.)
Compagnie Generale dAutomatisme SA
Original Assignee
Compagnie Generale dAutomatisme SA
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 Compagnie Generale dAutomatisme SA filed Critical Compagnie Generale dAutomatisme SA
Priority to FR7024562A priority Critical patent/FR2097329A5/en
Priority to FR7105951A priority patent/FR2127071A6/fr
Priority to BE769112A priority patent/BE769112A/en
Priority to IT6924071A priority patent/IT951692B/en
Priority to NL7109154A priority patent/NL7109154A/xx
Priority to GB3120771A priority patent/GB1327339A/en
Priority to DE19712132970 priority patent/DE2132970C3/en
Application granted granted Critical
Publication of FR2097329A5 publication Critical patent/FR2097329A5/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/272—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration for following a reaction, e.g. for determining photometrically a reaction rate (photometric cinetic analysis)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity

Abstract

Identification of bacteria using a photometer to detect the course of the reaction between a suspension of the bacteria and a chemical product in a sequence of sample cups in which the chemical products differ by: (a) the processing of first and second analogue signals representing the optical density of the contents of a sample cup referred to first and second wavelengths characteristic of the course of the reaction and the presence of the chemical produce, (b) the prodn. from the first and second analogue signals of a third analogue signal which is a growth function for the course of the reaction, and the coding of this signal with respect to a range of given coded variations extending between two pre-determined values are presenting zero reaction and the other total reaction, so that the value of this coded third signal allows the bacteria to be identified.
FR7024562A 1970-07-02 1970-07-02 Automatic photometric indentification of bacteria - eg by following the course of a colour reaction Expired FR2097329A5 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7024562A FR2097329A5 (en) 1970-07-02 1970-07-02 Automatic photometric indentification of bacteria - eg by following the course of a colour reaction
FR7105951A FR2127071A6 (en) 1970-07-02 1971-02-22
BE769112A BE769112A (en) 1970-07-02 1971-06-28 METHOD AND DEVICE FOR PHOTOMETRIC ANALYSIS FOR IDENTIFYING BACTERIA
IT6924071A IT951692B (en) 1970-07-02 1971-07-01 PHOTOMETRIC ANALYSIS DEVICE FOR THE IDENTIFICATION OF BACTERIA
NL7109154A NL7109154A (en) 1970-07-02 1971-07-02
GB3120771A GB1327339A (en) 1970-07-02 1971-07-02 Method and apparatus for identifying bacteria
DE19712132970 DE2132970C3 (en) 1970-07-02 1971-07-02 Identification of a bacterium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7024562A FR2097329A5 (en) 1970-07-02 1970-07-02 Automatic photometric indentification of bacteria - eg by following the course of a colour reaction

Publications (1)

Publication Number Publication Date
FR2097329A5 true FR2097329A5 (en) 1972-03-03

Family

ID=9058178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7024562A Expired FR2097329A5 (en) 1970-07-02 1970-07-02 Automatic photometric indentification of bacteria - eg by following the course of a colour reaction

Country Status (1)

Country Link
FR (1) FR2097329A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185685A1 (en) * 1972-05-22 1974-01-04 Mc Donnell Douglas Corp
EP0041366A1 (en) * 1980-05-30 1981-12-09 Hitachi, Ltd. Method for operating an apparatus for analysing samples optically
EP1809760A2 (en) * 2004-10-21 2007-07-25 Peter E. Rising Infrared measurement for the rapid enumeration of microbial concentrations

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185685A1 (en) * 1972-05-22 1974-01-04 Mc Donnell Douglas Corp
EP0041366A1 (en) * 1980-05-30 1981-12-09 Hitachi, Ltd. Method for operating an apparatus for analysing samples optically
EP1809760A2 (en) * 2004-10-21 2007-07-25 Peter E. Rising Infrared measurement for the rapid enumeration of microbial concentrations
EP1809760A4 (en) * 2004-10-21 2012-05-09 Peter E Rising Infrared measurement for the rapid enumeration of microbial concentrations
US8679775B2 (en) 2004-10-21 2014-03-25 Industrial Municipal Equipment, Inc. Infrared measurement for the rapid enumeration of microbial concentrations

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Legal Events

Date Code Title Description
ST Notification of lapse