FR2370269A2 - Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means - Google Patents

Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means

Info

Publication number
FR2370269A2
FR2370269A2 FR7633746A FR7633746A FR2370269A2 FR 2370269 A2 FR2370269 A2 FR 2370269A2 FR 7633746 A FR7633746 A FR 7633746A FR 7633746 A FR7633746 A FR 7633746A FR 2370269 A2 FR2370269 A2 FR 2370269A2
Authority
FR
France
Prior art keywords
liq
appts
indicator means
rise
temp
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.)
Granted
Application number
FR7633746A
Other languages
French (fr)
Other versions
FR2370269B2 (en
Inventor
William Simonet
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7633746A priority Critical patent/FR2370269A2/en
Publication of FR2370269A2 publication Critical patent/FR2370269A2/en
Application granted granted Critical
Publication of FR2370269B2 publication Critical patent/FR2370269B2/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/36—Freezing; Subsequent thawing; Cooling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K3/00—Thermometers giving results other than momentary value of temperature
    • G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
    • G01K3/06—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of space

Abstract

Appts. for detecting reheating in a deep-frozen prod. according to the principal patent comprises a liq. having a predetermined solidification point, an enveloping material which holds the liq. and which is degradable, to permit flow of the liq., at about the freezing point of the liq. and means to indicate flow of the liq. when the temp. rises above the liq. freezing point. Improvement comprises using a soln. of a salt as liq., the pH of which is adjusted to a predetermined value. The indicator means comprises a porous body previously impregnated with a substance which will give a clear colour change when moistened by the liq. when it flows. The appts. is used for monitoring the storage of food and provides a visible indication that a certain temp. has been exceeded.
FR7633746A 1976-11-09 1976-11-09 Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means Granted FR2370269A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7633746A FR2370269A2 (en) 1976-11-09 1976-11-09 Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7633746A FR2370269A2 (en) 1976-11-09 1976-11-09 Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means

Publications (2)

Publication Number Publication Date
FR2370269A2 true FR2370269A2 (en) 1978-06-02
FR2370269B2 FR2370269B2 (en) 1980-05-23

Family

ID=9179695

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633746A Granted FR2370269A2 (en) 1976-11-09 1976-11-09 Appts. for detecting temp. rise in deep frozen foods - includes salt soln. in glass container surrounded by colour indicator means

Country Status (1)

Country Link
FR (1) FR2370269A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016005070A1 (en) * 2016-04-27 2017-11-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for monitoring the temperature of a cryopreserved biological sample
US11085834B2 (en) 2016-04-27 2021-08-10 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Device and method for monitoring the temperature of a cryogenically preserved biological sample
US11166454B2 (en) 2016-04-27 2021-11-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Method and device for the temperature monitoring of a cryopreserved biological sample
US11606952B2 (en) 2016-04-27 2023-03-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and device for the temperature monitoring of a cryopreserved biological sample

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016005070A1 (en) * 2016-04-27 2017-11-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for monitoring the temperature of a cryopreserved biological sample
US11085834B2 (en) 2016-04-27 2021-08-10 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Device and method for monitoring the temperature of a cryogenically preserved biological sample
US11166454B2 (en) 2016-04-27 2021-11-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Method and device for the temperature monitoring of a cryopreserved biological sample
US11549851B2 (en) 2016-04-27 2023-01-10 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Device and method for monitoring the temperature of a cryopreserved biological sample
US11606952B2 (en) 2016-04-27 2023-03-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Method and device for the temperature monitoring of a cryopreserved biological sample

Also Published As

Publication number Publication date
FR2370269B2 (en) 1980-05-23

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