GB1245135A - Device for indicating state of storage of deep-frozen products - Google Patents
Device for indicating state of storage of deep-frozen productsInfo
- Publication number
- GB1245135A GB1245135A GB6035168A GB6035168A GB1245135A GB 1245135 A GB1245135 A GB 1245135A GB 6035168 A GB6035168 A GB 6035168A GB 6035168 A GB6035168 A GB 6035168A GB 1245135 A GB1245135 A GB 1245135A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- dye
- vessel
- porous material
- temperature
- 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
Links
- 239000007788 liquid Substances 0.000 abstract 8
- 239000011148 porous material Substances 0.000 abstract 4
- 230000008014 freezing Effects 0.000 abstract 2
- 238000007710 freezing Methods 0.000 abstract 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical class [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical class [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229920000742 Cotton Polymers 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical class [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000011575 calcium Chemical class 0.000 abstract 1
- 229910052791 calcium Chemical class 0.000 abstract 1
- 230000000881 depressing effect Effects 0.000 abstract 1
- 239000000374 eutectic mixture Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000011147 inorganic material Substances 0.000 abstract 1
- 229910017053 inorganic salt Inorganic materials 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 230000002427 irreversible effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 239000011368 organic material Substances 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 239000011591 potassium Chemical class 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- 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
- G01K11/06—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening
- G01K11/08—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using melting, freezing, or softening of disposable test bodies, e.g. cone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/222—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating moisture content
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Biophysics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
1,245,135. Temperature indicators. STUDIENGESELLSCHAFT KOHLE m. b. H. Dec. 19, 1968 [Dec. 23, 1967], No. 60351/ 68. Heading G1D. A temperature indicator for frozen foodstuffs which gives an irreversible indication of the temperature of the foodstuff has risen above a predetermined limit during storage comprises a closed thin-walled vessel 1 made of a brittle material e. g. glass or polystyrene, and containing a liquid 2, preferably aqueous, which expands when solidifying to break the vessel 1, a porous material 3, e. g. cotton wool, surrounding the vessel 1 and enclosed in a transparent closed jacket 4, and an indicator 5 e. g. a water soluble dye impregnated on a disc of filter paper, so that if the ambient temperature rises above the freezing point of the liquid 2, the porous material 3 will become coloured due to the interaction of the liquid and the dye of the indicator. The liquid 2 is preferably an aqueous solution of an inorganic or organic material and non-toxic. In particular salts of sodium, potassium, ammonium or calcium may be used preferably as a eutectic mixture which melts at a precisely defined temperature. Inplace of the disc of dye-impregnated filter paper, the dye may be loose in the jacket 4, or alternatively may be dissolved in the liquid in the vessel 1. In some cases the dye itself may function as the substance depressing the freezing point of the liquid, or in cases where a coloured inorganic salt is used the dye may be dispensed with completely. The liquid from the vessel 1 may also be such as to react with a substance added to the porous material 3 leading to a visible change e. g. the liquid may be alkaline and the porous material contain phenolphthalein. Any dry dye present in the jacket 4 may be masked by white blotter paper so as to give a clearer indication of the melting of the contents of the vessel 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671601924 DE1601924A1 (en) | 1967-12-23 | 1967-12-23 | Device for displaying improper storage of frozen goods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1245135A true GB1245135A (en) | 1971-09-08 |
Family
ID=5680982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6035168A Expired GB1245135A (en) | 1967-12-23 | 1968-12-19 | Device for indicating state of storage of deep-frozen products |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT282326B (en) |
| BE (1) | BE725944A (en) |
| CH (1) | CH501219A (en) |
| ES (1) | ES361755A1 (en) |
| FR (1) | FR1601889A (en) |
| GB (1) | GB1245135A (en) |
| NL (1) | NL6818538A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130720A (en) * | 1982-09-21 | 1984-06-06 | Jose Prat Abel | Defrosting indicator |
| GB2293879A (en) * | 1994-10-05 | 1996-04-10 | Solomon Unsdorfer | Defrost warning indicator |
| CN112041648A (en) * | 2018-03-14 | 2020-12-04 | 泰坦公司 | Temperature rise and fall indicator using deep eutectic |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0501880A1 (en) * | 1991-02-27 | 1992-09-02 | SOCIETE COOL S.a.r.l. | Preservation state indicator for refrigerated or frozen products |
| FR2673286B1 (en) * | 1991-02-27 | 1995-05-19 | Cool Sarl | CONSERVATION STATUS INDICATOR FOR REFRIGERATED OR FROZEN PRODUCTS. |
-
1968
- 1968-12-17 CH CH1883868A patent/CH501219A/en not_active IP Right Cessation
- 1968-12-18 AT AT1232368A patent/AT282326B/en not_active IP Right Cessation
- 1968-12-19 GB GB6035168A patent/GB1245135A/en not_active Expired
- 1968-12-20 FR FR1601889D patent/FR1601889A/fr not_active Expired
- 1968-12-21 ES ES361755A patent/ES361755A1/en not_active Expired
- 1968-12-23 BE BE725944D patent/BE725944A/xx unknown
- 1968-12-23 NL NL6818538A patent/NL6818538A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130720A (en) * | 1982-09-21 | 1984-06-06 | Jose Prat Abel | Defrosting indicator |
| GB2293879A (en) * | 1994-10-05 | 1996-04-10 | Solomon Unsdorfer | Defrost warning indicator |
| CN112041648A (en) * | 2018-03-14 | 2020-12-04 | 泰坦公司 | Temperature rise and fall indicator using deep eutectic |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6818538A (en) | 1969-06-25 |
| ES361755A1 (en) | 1970-11-01 |
| AT282326B (en) | 1970-06-25 |
| FR1601889A (en) | 1970-09-21 |
| CH501219A (en) | 1970-12-31 |
| BE725944A (en) | 1969-06-23 |
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