DE19546093A1 - Collector for measurement of microorganisms - Google Patents
Collector for measurement of microorganismsInfo
- Publication number
- DE19546093A1 DE19546093A1 DE1995146093 DE19546093A DE19546093A1 DE 19546093 A1 DE19546093 A1 DE 19546093A1 DE 1995146093 DE1995146093 DE 1995146093 DE 19546093 A DE19546093 A DE 19546093A DE 19546093 A1 DE19546093 A1 DE 19546093A1
- Authority
- DE
- Germany
- Prior art keywords
- culture medium
- nutrient
- fan
- air
- medium
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
- C12Q1/06—Quantitative determination
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Zoology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Biophysics (AREA)
- General Engineering & Computer Science (AREA)
- Immunology (AREA)
- Biotechnology (AREA)
- Toxicology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Die Erfindung bezieht sich auf ein Meßgerät zum Messen der mikrobiologischen Belastung der Luft. Es kann auch gleichzei tig als Sammler für luftgetragene Chemikalien und radioaktive Aerosole genutzt werden.The invention relates to a measuring device for measuring the microbiological pollution of the air. It can also be done at the same time tig as a collector for airborne chemicals and radioactive Aerosols can be used.
Bisherige Meßgeräte schleudern die mit Mikroorganismen bela dene Luft über eine Düse und senkrecht auf eine Prallplatte mit einem festen Nährmedium auf oder in eine Nährflüssigkeit. Danach wird das Nährmedium gekühlt, transportiert, dann selektiv bebrütet, dann der bebrütete Bereich angefärbt, vergrößert und die Gesamtkeimzahl ausgezählt.Previous measuring devices spun the microorganisms air through a nozzle and perpendicular to a baffle plate with a solid nutrient medium on or in a nutrient liquid. Then the nutrient medium is cooled, transported, then selectively incubated, then the incubated area stained, enlarged and the total number of bacteria counted.
Ein neuartiges Meßgerät soll klein, leicht und billig in der Herstellung sein. Es muß lageunabhängig wirken. Es darf die Person, die es trägt, nicht behindern. Es soll vorhandene Mi kroorganismen nach definiertem Erwärmen so anzeigen, daß auf Kühlung und selektives Anfärben verzichtet werden kann.A new type of measuring device should be small, light and inexpensive Manufacturing. It must work regardless of the position. It can Do not hinder the person wearing it. It is said to be existing Wed. display croorganisms after defined heating so that on Cooling and selective staining can be dispensed with.
Die Erfindung erreicht dies dadurch, daß ein Ventilator di rekt auf die Nährboden bläßt. Die Flügel des Ventilators sind so geschränkt, daß mit jeder Ventilatordrehung eine definier te Luftmenge auf den Nährmedien aufschlägt. Es werden handels übliche 2seitig beschichtete Nährböden zur bisherigen Nur-Ana lyse der Belastung von Flüssigkeiten mit Mikroorganismen ver wendet. Diese Nährboden sind mit einer oder mehreren Chemika lien versetzt, die durch Besiedlung und Wachsen der Mikroor ganismen eine Färbereaktion im von mit Mikroorganismen besie delten Bereich derart bewirkt, daß auf ein Vergrößerungsverfa hren verzichtet werden kann.The invention achieves this in that a fan di blows right on the breeding ground. The fan blades are so limited that with each fan rotation a defin air volume hits the nutrient media. There will be trade Usual 2-sided coated media for the previous Nur-Ana lyse the contamination of liquids with microorganisms turns. These breeding grounds are covered with one or more chemicals lien displaced by the colonization and growth of the Mikroor ganisms a staining reaction in microbes with delten area causes such that a magnification can be dispensed with.
Die durch den Meßraum durchsetzte Luft wird über eine reflek tierende Lichtschranke, die die Zahl der Flügelumdrehungen zählt, und eine elektronische Schaltung, die die Zahl der Lichtimpulse in m3 umrechnet, ermittelt.The air passed through the measuring room is reflected by a reflector tive photoelectric sensor, which determines the number of wing revolutions counts, and an electronic circuit that measures the number of Converted light pulses into m3, determined.
Für Langzeitmessung - um das Nährmedium gegen Austrocknen zu schützen - wird beim Einschieben des Nährmediumträgers in den Meßraum mittig zwischen eine weitmaschige gegenläufig gewic kelte Gaze - die Gaze abgerollt und durch eine wenig eingeris sene Nährwasserampulle (Sollbruch-/ Solleckstelle) durch mit der Gaze in Verbindung stehende Fäden angefeuchtet.For long-term measurement - to prevent the nutrient medium from drying out protect - is when the nutrient medium is inserted into the Measurement room in the middle between a wide-meshed opposite direction cold gauze - the gauze unrolled and torn through a little sene nutrient ampoule (predetermined breaking / target leak point) with with the gauze related threads are moistened.
Für Messungen, bei denen gleichzeitig Chemikalien und radioak tive Gase/ Aerosole gesammelt werden sollen, ist an den Aus blasebereichen eine Aktivkohlefilterzone zusätzlich lösbar aufgebracht. For measurements in which chemicals and radioactive tive gases / aerosols to be collected is at the end blown areas an activated carbon filter zone can also be detached upset.
Auf dem Zeichnungsblatt sind zunächst die 2 bislang bekannten Verfahren beschrieben. Fig. 1 zeigt das Aufschleudern der be lasteten Luft (2) über Düse (1) auf den Nährboden (4); dann ist die Luft abgereichert (3). Fig. 2 zeigt das Durchperlen der belasteten Luft (2) über eine Düse (1), das Abgeben von Mikroorganismen an die Nährflüssigkeit und die abgereicherte Luft (3).The 2 methods known to date are first described on the drawing sheet. Fig. 1 shows the spinning of the loaded air ( 2 ) via nozzle ( 1 ) on the nutrient medium ( 4 ); then the air is depleted ( 3 ). Fig. 2 shows the bubbling of the polluted air ( 2 ) through a nozzle ( 1 ), the release of microorganisms into the nutrient liquid and the depleted air ( 3 ).
Fig. 2 zeigt die neuartige Erfindung: Luft (1) strömt über einen Ventilator, der einen Umdrehungszähler und zum Nährme dium hin geschränkte Flügeln hat, über den doppelseitigen Nährboden (4) . Dabei schlagen sich die Mikroorganismen nie der. Diese abgereicherte Luft (3) fließt durch eine Aktiv kohlezone (5) ab. Die Aktivkohlezone ist ablösbar. Fig. 2 shows the novel invention: air ( 1 ) flows over a fan, which has a revolution counter and the medium restricted to the medium, over the double-sided culture medium ( 4 ). The microorganisms never beat. This depleted air ( 3 ) flows through an activated carbon zone ( 5 ). The activated carbon zone is removable.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995146093 DE19546093A1 (en) | 1995-12-11 | 1995-12-11 | Collector for measurement of microorganisms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995146093 DE19546093A1 (en) | 1995-12-11 | 1995-12-11 | Collector for measurement of microorganisms |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19546093A1 true DE19546093A1 (en) | 1997-06-12 |
Family
ID=7779731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995146093 Ceased DE19546093A1 (en) | 1995-12-11 | 1995-12-11 | Collector for measurement of microorganisms |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19546093A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH583778A5 (en) * | 1973-01-12 | 1977-01-14 | Reuter Adolf Filba Kg | |
DE2822034A1 (en) * | 1978-05-19 | 1979-11-22 | Detec Sa | Appts. for collecting microbes suspended in the air - is fitted with a filter to reduce the air flow |
FR2469452A1 (en) * | 1979-11-09 | 1981-05-22 | Detec Sa | Sampling microorganisms in suspension in air - by Petri dish appts. incorporating pipe with diaphragm end opening on to Petri dish and fan for circulating air |
DE3410990A1 (en) * | 1984-03-17 | 1985-09-26 | Biotest-Serum-Institut Gmbh, 6000 Frankfurt | DEVICE FOR TESTING THE AIR FOR YOUR BODY CONTENT |
WO1990014437A1 (en) * | 1989-05-18 | 1990-11-29 | Biological Control Systems Pty. Ltd. | Air sampling |
GB2239943A (en) * | 1989-12-12 | 1991-07-17 | Iras Limited | Environmental radiological monitoring |
JPH0767694A (en) * | 1993-09-01 | 1995-03-14 | Toppan Printing Co Ltd | Method for collecting microorganism in gas and method for microbiologically examining gas |
DE19503663A1 (en) * | 1994-01-28 | 1995-08-03 | Joerg Prof Dr Hartung | Sampling of micro organisms in the ambient air |
-
1995
- 1995-12-11 DE DE1995146093 patent/DE19546093A1/en not_active Ceased
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH583778A5 (en) * | 1973-01-12 | 1977-01-14 | Reuter Adolf Filba Kg | |
DE2822034A1 (en) * | 1978-05-19 | 1979-11-22 | Detec Sa | Appts. for collecting microbes suspended in the air - is fitted with a filter to reduce the air flow |
FR2469452A1 (en) * | 1979-11-09 | 1981-05-22 | Detec Sa | Sampling microorganisms in suspension in air - by Petri dish appts. incorporating pipe with diaphragm end opening on to Petri dish and fan for circulating air |
DE3410990A1 (en) * | 1984-03-17 | 1985-09-26 | Biotest-Serum-Institut Gmbh, 6000 Frankfurt | DEVICE FOR TESTING THE AIR FOR YOUR BODY CONTENT |
WO1990014437A1 (en) * | 1989-05-18 | 1990-11-29 | Biological Control Systems Pty. Ltd. | Air sampling |
GB2239943A (en) * | 1989-12-12 | 1991-07-17 | Iras Limited | Environmental radiological monitoring |
JPH0767694A (en) * | 1993-09-01 | 1995-03-14 | Toppan Printing Co Ltd | Method for collecting microorganism in gas and method for microbiologically examining gas |
DE19503663A1 (en) * | 1994-01-28 | 1995-08-03 | Joerg Prof Dr Hartung | Sampling of micro organisms in the ambient air |
Non-Patent Citations (6)
Title |
---|
57-189697 A.,C- 151,Feb. 17,1983,Vol. 7,No. 39 * |
57-189698 A.,C- 151,Feb. 17,1983,Vol. 7,No. 39 * |
Chemical Patents Index, Basic Abstracts Journal, Section J: Derwent Publications, GB, 1988, Ref. 88-089998/13 zu SU 1330-154-A * |
DÜRR,P.: Luftkeimindikation bierschädlicher Bakterien. In: Brauwelt, Nr.39, 1983, S.1652- S.1659 * |
JP Patents Abstracts of Japan: 57-189696 A.,C- 151,Feb. 17,1983,Vol. 7,No. 39 * |
Patent Abstracts of Japan, Publ. number 07067694A * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8122 | Nonbinding interest in granting licenses declared | ||
8131 | Rejection |