EP0643989B1 - Verfahren und System zur Mischung von Flüssigkeiten - Google Patents
Verfahren und System zur Mischung von Flüssigkeiten Download PDFInfo
- Publication number
- EP0643989B1 EP0643989B1 EP94114512A EP94114512A EP0643989B1 EP 0643989 B1 EP0643989 B1 EP 0643989B1 EP 94114512 A EP94114512 A EP 94114512A EP 94114512 A EP94114512 A EP 94114512A EP 0643989 B1 EP0643989 B1 EP 0643989B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing element
- liquid
- mixing
- vessel
- gas
- 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 - Lifetime
Links
- 238000002156 mixing Methods 0.000 title claims description 123
- 238000000034 method Methods 0.000 title claims description 32
- 239000012530 fluid Substances 0.000 title description 4
- 239000007788 liquid Substances 0.000 claims description 100
- 238000001514 detection method Methods 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 11
- 239000006260 foam Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000011156 evaluation Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 25
- 238000004458 analytical method Methods 0.000 description 20
- 230000008569 process Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000004313 potentiometry Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
- B01F33/407—Mixers using gas or liquid agitation, e.g. with air supply tubes by blowing gas on the material from above
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/2201—Control or regulation characterised by the type of control technique used
- B01F35/2209—Controlling the mixing process as a whole, i.e. involving a complete monitoring and controlling of the mixing process during the whole mixing cycle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/23—Mixing of laboratory samples e.g. in preparation of analysing or testing properties of materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
- Y10T436/119163—Automated chemical analysis with aspirator of claimed structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25625—Dilution
Definitions
- the invention relates to a method for mixing a Liquid with another liquid or solid by blowing air onto the surface of the liquid, and a system for performing the method.
- Chemical and medical analyzes are often performed using equipment carried out a quick, targeted and consistent Allow treatment of a variety of samples. in the This not only makes comparison to manual procedures a cost reduction but also an improved reliability and accuracy of the analyzes achieved.
- Discrete analyzers where every single analysis in one separate reaction vessel is carried out.
- the vessels are through the analytical equipment transported, substances are added or removed, the contents of the vessel are mixed and the contents of the vessel become a measuring method, for example photometry or potentiometry subjected.
- the analysis vessel is attached to a Ultrasound source coupled and the contents of the vessel through Ultrasound mixed. Mix this way often does not run completely and also has the disadvantage that many substances, especially larger organic ones Molecules that can be destroyed.
- Patent application WO-A-85 03571 describes a mixing process described in which the liquid in an analysis vessel is mixed by inflating air.
- Figure 10 of this Registration shows that a nozzle is located above the edge of the vessel becomes. A liquid is ejected through the Air jet is prevented by a defined fluid level is set. This method has the Disadvantage that precautions have to be taken in order to to ensure defined liquid level.
- the invention was based on the object, a method and a To propose a system for mixing a liquid, which works without procrastination and is fast, effective and enables reliable mixing of the liquid.
- Another object of the invention is a method to provide with the regardless of fluid volume and Vessel shape ensures extensive mixing can be.
- the invention also relates to a system for Mixing a liquid with at least one other Liquid or with at least one solid that is a vessel with the substances to be mixed, a mixing element, a Detection device, a device for moving the Mixing element and a control unit.
- a method according to the invention relates above all not exclusively on mixes in clinical Analysis equipment.
- the liquid to be mixed is located in the analysis apparatus usually in cylindrical Vessels with a round or square cross-section, the are open to the top.
- a liquid with at least another liquid or with at least one solid be mixed.
- Liquids in this sense can for example analysis samples or reagent solutions, as well Be washing and auxiliary solutions.
- sample solutions Liquids, such as water samples, urine, blood, Understood saliva etc.
- mixing liquids does not necessarily have to have a phase boundary. Mixing may also be desirable when mixable liquids successive pipetting into a common Vessel were put together, as a rule by the Combining does not result in complete mixing.
- mixing a liquid with a solid usually the purpose is that the solid in the liquid dissolves.
- a mixing element from which a gas jet emerges onto the surface of the liquid moved in the analysis vessel.
- gas from the mixing element during the movement process is generally used as the gas for cost reasons.
- gases for example inert gases, can also be used.
- a detection takes place during the movement of the mixing element, whether contact of the mixing element with the liquid surface is reached.
- the detection can for example through an optical system from outside the reaction vessel respectively.
- Particularly advantageous can the mixing element mechanically with a detection device be coupled. Detection of the liquid surface is commonly referred to as "liquid level detection”.
- the invention uses the different liquid levels detection "known method to ensure thorough mixing Inflation of air to open up another area of application and improve their functioning. According to the invention this is done by coupling a mixing element with a detection device.
- the mixing element is removed from the liquid removed as soon as contact with the liquid is detected has been.
- Detection device and mixing element are mechanical connected with each other, but offset in height, so can over the Height offset of the distance of the mixing device from the Liquid surface to be regulated. In this case it is not necessarily an additional movement of the mixing element necessary from the surface.
- the vessels are preferably not completely filled with liquid filled so that a margin of several millimeters to a few Withstands centimeters. If a mixing element is brought into the vessel, so this results in a narrowing of the vessel, what when the gas flow is switched on to a congestion effect and thus to reduce the risk of splashing of the liquid leads.
- the or the gas jets emerging from the mixing element can surface in different ways Liquid. Possible types of targeting are exemplified below for a single gas jet described.
- the gas jet can be radial to the vessel axis offset at a point between the vessel axis and the vessel wall hit the liquid surface, taking it not immediately must be directed towards the surface of the liquid, but also aimed at the vessel wall at a flat angle can be and from there indirectly to the area close to the wall strikes the liquid surface.
- the gas jet can also be aligned so that the escaping gas Performs rotational movement around the axis of the vessel. By this arrangement will be near-surface areas of the liquid also set in a circulating movement, whereby deeper layers of liquid are almost instantaneous be moved and thus a quick mixing is achieved becomes.
- a non-contact measurement of the distance between the surface of the liquid and mixing element takes place on optical way.
- Most of the analysis vessels are out optically permeable material, as a rule optical measurements are made in the analysis solutions.
- optical sensors for example map an optical array.
- the mixing element After the foam layer has been displaced, the mixing element continue to approach the liquid surface and the true liquid surface is detected.
- the mixing element is removed from the surface by a predetermined amount and gas preferably inflated from additional nozzles.
- the described methods can be carried out using a method for Combination detection can be combined. It is for Example possible to irradiate the liquid and the Constancy of a measured value, e.g. B. the light absorption as To use the criterion of thorough mixing.
- a system according to the invention can also be equipped with a device for dispensing liquids, e.g. B. a pipetting device, be coupled.
- a device for dispensing liquids e.g. B. a pipetting device
- a particularly favorable combination results when a pipetting device is in a Mixing element is integrated.
- a vessel in the context of the invention has at least one Opening.
- a mixing element in the sense of the invention has at least an outlet opening for a gas jet.
- Preferably owns the mixing element also has further outlet openings, also called nozzles. It is not necessarily under the nozzle a conically narrowing outlet opening means but also such openings that have a constant diameter have.
- cylindrical analysis vessels has an inventive Mixing element itself also essentially cylindrical shape with a diameter smaller than that of the analysis vessel.
- the nozzles of the mixing element are preferably located on the side facing the liquid of the mixing element. The nozzles can move against the axis of the Mixing element be inclined and / or tangential components to the axis of the mixing element. Are an advantage several nozzles, preferably 3, which are at a height of Mixing element are.
- nozzles are attached to a wreath that is farther from the surface than the first sentence Nozzles.
- This arrangement ensures that the gas flow is stowed in the analysis vessel, which is a detachment of Suppresses droplets from the liquid.
- the Also part of the mixing element facing the analysis vessel be rotatable.
- a particularly preferred arrangement results when a nozzle is firmly under a tangential An angle of 45 ° is arranged and above this nozzle Wreath of 8, also at 45 ° axially attached nozzles is available.
- Preferred diameters of the nozzles are included 0.3 to 0.7 mm, with 0.4 to 0.6 mm being particularly preferred are.
- Preferred volume flows are 4-11 liters per Minute.
- Moving the mixing element towards the liquid surface can with devices known in the prior art, for example a spindle drive.
- FIG. 1 schematically shows a system (1) according to the invention for mixing liquids.
- the system (1) is a capacitive measuring principle.
- the mixing element (2) provides one pole of the measuring arrangement, while the second pole (3) located outside on the wall of the vessel (4).
- a Touching the tip (5) of the mixing element (2) with the Liquid surface leads to a change in capacity between the mixing element (2) and the second pole (3) by the Evaluation and control device (6) is processed.
- the Evaluation and control device (6) controls both Motor (7) and a pump (8).
- the motor (7) moves over a rack the mixing element (2) relative to the surface the liquid (9).
- Air is pumped in with the pump (8)
- the air passes through a nozzle (11) which is about 40 ° against the Liquid surface is inclined from the mixing element out.
- the mixing element (2) is initially in a starting position above the liquid.
- the evaluation and Control device sets the pump (8) in motion so that a weak air flow is promoted.
- the mixing element (2) is by driving the motor (7) slowly on the Liquid surface moved and this movement stopped, as soon as a Touching the tip (5) of the mixing element with the Liquid surface is detected.
- the mixing element (2) is moved 2 mm away from the liquid surface and the Pump (8) controlled so that a volume flow of 5 l / min through the nozzle (11).
- FIG. 2A shows a longitudinal section through a mixing element (20).
- the metal body (21) of the mixing element (20) an inner tube (22), the opening of which is perpendicular to the longitudinal axis the mixing element is arranged.
- This inner tube (22) is suitable to blow foam away.
- the mixing element (20) has a feed pipe (23) which opens into a nozzle (24).
- the Nozzle (24) forms one with the longitudinal axis of the mixing element 45 ° angle. With air emerging from the nozzle (24) liquids can be mixed.
- Figure 2B shows the cross section of a mixing element (30) tangentially arranged nozzles.
- a longitudinal tube (31) to blow foam away can.
- This longitudinal tube (31) has three nozzles each surround two heights of the longitudinal axis.
- Tangential nozzles (32) of the first set have an inclination against the longitudinal axis of the Mixing element, d. that is, emerging from the tangential nozzles (32) Gas hits at an angle to that Surface normal to the liquid surface.
- the Set of vertical nozzles (33) is further from the Tip of the mixing element removed. From these nozzles escaping gas forms a back pressure in the mixing vessel, which a splash of liquid when mixing suppressed.
- FIG 3 is the time course of mixing shown.
- a cylindrical analysis vessel (diameter 1 cm, height 4 cm) 10 ul of ink were added and 1000 ul Water layered.
- the mixing was carried out with a Mixing element that has 3 tangential holes (diameter 0.5 mm) is at a distance of 6 mm from the liquid surface and a volume flow of 8.4 l / min. 9 mm above the bottom of the vessel was with a photodiode and a receiver performed a color measurement.
- Figure 3 is plotted on the abscissa the time that the Mixing element was operated and the resulting on the ordinate Color the solution. From the graphic it can be seen that complete mixing is achieved after approx. 2.5 s is.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
- Bewegen des Mischelementes in Richtung auf die Flüssigkeitsoberfläche,
- Optische Messung des Abstandes zwischen Flüssigkeits oberfläche und Mischelement von außerhalb des Gefäßes mit einer Vorrichtung,
- Beendigung der Bewegung des Mischelements wenn ein vorbestimmter Abstand von Mischelement und Flüssigkeitsoberfläche erreicht ist,
- Aufblasen eines Gases aus dem Mischelement auf die Flüssigkeitsoberfläche, so daß die Flüssigkeit in Bewegung versetzt wird.
- ein Gefäß aus optisch durchlässigem Material, das die zu mischenden Substanzen enthält und mindestens eine Öffnung besitzt,
- ein Mischelement, das mindestens eine Öffnung besitzt, durch die ein Gasstrahl austreten kann,
- ein Vorrichtung zur optischen Messung des Abstandes zwischen Flüssigkeitsoberfläche und Mischelement, die sich außerhalb des Gefäßes befindet.
- eine Vorrichtung zur Bewegung des Mischelementes, Richtung auf die Phasengrenze und von dieser weg,
- eine Auswerte- und Steurvorrichtung, mit der aufgrund der Signale der Detektionsvorrichtung unter Berücksichtigung eines Programmablaufplanes Positionierung des Mischelements und der Austritt von Gas aus dem Mischelement gesteuert wird.
- Figur 1:
- Schematische Darstellung eines System zur Mischung von Flüssigkeiten. Diese Detektionsvorrichtung liegt allerdings ein kapazitives Meßprinzip zugrunde und ist daher nicht gemäß der vorliegenden Erfindung.
- Figur 2:
- Technische Zeichnung von Mischelementen.
- Figur 3:
- Zeitlicher Verlauf einer Durchmischung.
Claims (9)
- Verfahren zur Mischung einer Flüssigkeit mit mindestens einer weiteren Flüssigkeit oder mit mindestens einem Feststoff in einem durch eine Öffnung zugänglichen Gefäß aus optisch durchlässigem Material mit mindestens einem aus einem Mischelement austretenden Gasstrahl, das die Schritte beinhalteta) Bewegen des Mischelementes in Richtung auf die Flüsigkeitsoberfläche,b) Messung des Abstandes von Mischelement und Flüssigkeitsoberfläche,c) Beendigung der Bewegung des Mischelementes wenn ein vorbestimmter Abstand von Mischelement und Flüssigkeitsoberfläche erreicht ist,d) Aufblasen eines Gases aus dem Mischelement auf die Flüssigkeitsoberfläche, so daß die Flüssigkeit in Bewegung versetzt wird,
- Verfahren Anspruch 1, bei dem das Mischelement Vorrichtungen enthält, die zur Abgabe von Flüssigkeiten in das Gefäß dienen.
- Verfahren gemäß Anspruch 1, bei dem der vorbestimmte Abstand von Mischelement und Flüssigkeitsoberfläche 3 bis 6,5 mm beträgt.
- Verfahren gemäß Anspruch 1, bei dem aus dem Mischelement in Richtung der Flüssigkeitsoberfläche ein Gas aufgeblasen wird, um Schaum oder auf der Flüssigkeit befindliche Stoffe zu verdrängen.
- Verfahren gemäß Anspruch 1, bei dem das Aufblasen des Gases zwischenzeitlich nicht unterbrochen wird.
- Verfahren gemäß Anspruch 1 mit einem Schritt, der eine Detektierung einer Vermischung beinhaltet.
- Apparatur zur Mischung einer Flüssigkeit mit mindestens einer weiteren Flüssigkeit oder mit mindestens einem Feststoff, das folgende Elemente beinhaltet:a) ein Gefäß aus optisch durchlässigem Material, das die zu mischenden Substanzen enthält und mindestens eine Öffnung besitzt,b) ein Mischelement, das mindestens eine Düse besitzt, durch die ein Gasstrahl austreten kann,c) eine Vorrichtung zur Messung des Abstandes zwischen Flüssigkeitsoberfläche und Mischelement,d) eine Vorrichtung zur Bewegung des Mischelementes in Richtung auf die Phasengrenze und von dieser weg,e) eine Auswerte- und Steuervorrichtung, mit der aufgrund der Signale der Detektionsvorrichtung unter Berücksichtigung eines Programmablaufplanes Positionierung des Mischelementes und Austritt von Gas aus dem Mischelement gesteuert werden
- Apparatur gemäß Anspruch 7, bei dem das Mischelement eine Düse mit Öffnung senkrecht zur Längsachse des Mischelementes und mindestens eine weitere Düse, deren Öffnung gegenüber der Längsachse des Mischelementes geneigt ist, besitzt.
- Apparatur gemäß Anspruch 7, bei dem das Mischelement einen Satz von Düsen besitzt, deren Öffnungen im wesentlichen senkrecht zur Längsachse des Mischelementes ausgerichtet sind und die von der Spitze des Mischelementes weiter entfernt sind als die bereits genannten Düsen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4331997A DE4331997A1 (de) | 1993-09-21 | 1993-09-21 | Verfahren und System zur Mischung von Flüssigkeiten |
DE4331997 | 1993-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0643989A1 EP0643989A1 (de) | 1995-03-22 |
EP0643989B1 true EP0643989B1 (de) | 1998-12-09 |
Family
ID=6498170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94114512A Expired - Lifetime EP0643989B1 (de) | 1993-09-21 | 1994-09-15 | Verfahren und System zur Mischung von Flüssigkeiten |
Country Status (5)
Country | Link |
---|---|
US (1) | US5780306A (de) |
EP (1) | EP0643989B1 (de) |
JP (1) | JP2883819B2 (de) |
DE (2) | DE4331997A1 (de) |
ES (1) | ES2125387T3 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6076410A (en) * | 1998-08-31 | 2000-06-20 | Hanson Research Corporation | Liquid sample collector and liquid return apparatus |
US8323984B2 (en) * | 2002-12-19 | 2012-12-04 | Beckman Coulter, Inc. | Method and apparatus for mixing blood samples for cell analysis |
JP4420020B2 (ja) * | 2004-03-23 | 2010-02-24 | 東レ株式会社 | 溶液を攪拌する方法 |
DE102004028303A1 (de) | 2004-06-11 | 2005-12-29 | Roche Diagnostics Gmbh | Verfahren und Vorrichtung zum Nachweis von Analyten |
FR2898285B1 (fr) * | 2006-03-13 | 2008-04-18 | Biomerieux Sa | Dispositif, utilisation et procede de prelevement d'un liquide |
US8756992B2 (en) | 2011-09-14 | 2014-06-24 | Alstom Technology Ltd | Level detector for measuring foam and aerated slurry level in a wet flue gas desulfurization absorber tower |
CN103575659B (zh) * | 2013-11-01 | 2016-01-13 | 合肥金星机电科技发展有限公司 | 一种用于对烟道中烟气进行检测的装置 |
WO2020257963A1 (zh) * | 2019-06-24 | 2020-12-30 | 深圳迈瑞生物医疗电子股份有限公司 | 一种推片机及样本染色方法 |
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US5141871A (en) * | 1990-05-10 | 1992-08-25 | Pb Diagnostic Systems, Inc. | Fluid dispensing system with optical locator |
US5463895A (en) * | 1990-11-09 | 1995-11-07 | Abbott Laboratories | Sample pipetting method |
US5143849A (en) * | 1991-03-21 | 1992-09-01 | Eastman Kodak Company | Tip to surface spacing for optimum dispensing controlled by a detected pressure change in the tip |
JPH04319624A (ja) * | 1991-04-18 | 1992-11-10 | Olympus Optical Co Ltd | 液面検知装置 |
DE4203638A1 (de) * | 1992-02-08 | 1993-08-12 | Boehringer Mannheim Gmbh | Fluessigkeitstransfereinrichtung fuer ein analysegeraet |
DE4232096A1 (de) * | 1992-09-25 | 1994-03-31 | Boehringer Mannheim Gmbh | Verfahren und Vorrichtung zum berührungslosen automatischen Mischen eines Reaktionsgemisches in einem Analysegerät |
DE59309797D1 (de) * | 1992-12-19 | 1999-10-28 | Roche Diagnostics Gmbh | Vorrichtung zur Detektion einer Flüssigkeitphasengrenze in einem lichtdurchlässigen Messrohr |
-
1993
- 1993-09-21 DE DE4331997A patent/DE4331997A1/de not_active Withdrawn
-
1994
- 1994-09-15 DE DE59407433T patent/DE59407433D1/de not_active Expired - Fee Related
- 1994-09-15 ES ES94114512T patent/ES2125387T3/es not_active Expired - Lifetime
- 1994-09-15 EP EP94114512A patent/EP0643989B1/de not_active Expired - Lifetime
- 1994-09-16 JP JP6222028A patent/JP2883819B2/ja not_active Expired - Lifetime
-
1996
- 1996-11-07 US US08/744,506 patent/US5780306A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0643989A1 (de) | 1995-03-22 |
JP2883819B2 (ja) | 1999-04-19 |
DE59407433D1 (de) | 1999-01-21 |
DE4331997A1 (de) | 1995-03-23 |
ES2125387T3 (es) | 1999-03-01 |
US5780306A (en) | 1998-07-14 |
JPH07155581A (ja) | 1995-06-20 |
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