GB1208435A - Isothermal drying apparatus and method - Google Patents
Isothermal drying apparatus and methodInfo
- Publication number
- GB1208435A GB1208435A GB49679/67A GB4967967A GB1208435A GB 1208435 A GB1208435 A GB 1208435A GB 49679/67 A GB49679/67 A GB 49679/67A GB 4967967 A GB4967967 A GB 4967967A GB 1208435 A GB1208435 A GB 1208435A
- Authority
- GB
- United Kingdom
- Prior art keywords
- specimen
- receptacle
- ampoules
- evacuated
- 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
- 238000001035 drying Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 244000005700 microbiome Species 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000003708 ampul Substances 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000006903 response to temperature Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Drying Of Solid Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
1,208,435. Preserving micro-organisms. NATIONAL RESEARCH DEVELOPMENT CORP. 29 Oct., 1968 [1 Nov., 1967], No. 496 79/67. Heading A2D. [Also in Division F4] A method of preserving a specimen (e.g. micro-organisms) comprises drying the specimen under substantially isothermal conditions by heating the specimen in a receptable, partially evacuating the receptacle and controlling the total pressure in the receptacle in such a manner that the rate of loss of heat from the specimen is substantially equal to the rate at which heat is supplied to the specimen, evacuating the receptacle to a higher vacuum after the specimen has been dried and then hermetically sealing the receptacle. In the apparatus shown, ampoules 1 and 7 each containing a specimen, are mounted on manifold 4 which is connected to a gasballasted rotary vacuum pump 5 and aircooled oil diffusion pump 6, heated in hot water bath 11 or a heated fluidized sand bed and partially evacuated. The difference in the temperature of control specimen in ampoule 7 and the water bath is sensed by a thermocouple 9 and this difference is maintained at a substantially constant predetermined value during drying, by controllably feeding air via adjustable needle valve 15 into the evacuating system. The valve 15 is automatically operated in response to temperature difference sensed by the thermocouple 9. When the specimens have been dried the temperature of the specimens rises towards that of the bath and the valve 15 is closed. The ampoules are then automatically raised from the bath and evacuated to a high vacuum. The evacuated ampoules are healed by a high temperature flame.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB49679/67A GB1208435A (en) | 1967-11-01 | 1967-11-01 | Isothermal drying apparatus and method |
| US771194A US3552030A (en) | 1967-11-01 | 1968-10-28 | Isothermal drying apparatus and method |
| DE19681806173 DE1806173A1 (en) | 1967-11-01 | 1968-10-30 | Method and device for drying samples under isothermal conditions |
| FR1590467D FR1590467A (en) | 1967-11-01 | 1968-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB49679/67A GB1208435A (en) | 1967-11-01 | 1967-11-01 | Isothermal drying apparatus and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1208435A true GB1208435A (en) | 1970-10-14 |
Family
ID=10453171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB49679/67A Expired GB1208435A (en) | 1967-11-01 | 1967-11-01 | Isothermal drying apparatus and method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3552030A (en) |
| DE (1) | DE1806173A1 (en) |
| FR (1) | FR1590467A (en) |
| GB (1) | GB1208435A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2050267C3 (en) * | 1970-10-13 | 1974-06-12 | Boehringer Mannheim Gmbh, 6800 Mannheim | Process for the preparation of stable preparations of reduced nicotinamide adenine dinucleotide |
| US4063367A (en) * | 1975-09-29 | 1977-12-20 | Leon Talalay | Method of and apparatus for drying liquid from a liquid-solid composite and sealing the remaining solid material |
| CN102841009A (en) * | 2012-08-16 | 2012-12-26 | 安徽省电力科学研究院 | Device for treating and carbonizing before testing content of metal in transformer oil |
-
1967
- 1967-11-01 GB GB49679/67A patent/GB1208435A/en not_active Expired
-
1968
- 1968-10-28 US US771194A patent/US3552030A/en not_active Expired - Lifetime
- 1968-10-30 DE DE19681806173 patent/DE1806173A1/en active Pending
- 1968-10-31 FR FR1590467D patent/FR1590467A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1590467A (en) | 1970-04-13 |
| US3552030A (en) | 1971-01-05 |
| DE1806173A1 (en) | 1969-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |