WO2005094995A1 - Verfahren und vorrichtung zum speichern und dispensieren von kleinen flüssigkeitsmengen - Google Patents
Verfahren und vorrichtung zum speichern und dispensieren von kleinen flüssigkeitsmengen Download PDFInfo
- Publication number
- WO2005094995A1 WO2005094995A1 PCT/CH2004/000753 CH2004000753W WO2005094995A1 WO 2005094995 A1 WO2005094995 A1 WO 2005094995A1 CH 2004000753 W CH2004000753 W CH 2004000753W WO 2005094995 A1 WO2005094995 A1 WO 2005094995A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- dispensing
- liquid
- end region
- hose
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0241—Drop counters; Drop formers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00351—Means for dispensing and evacuation of reagents
- B01J2219/00364—Pipettes
- B01J2219/00367—Pipettes capillary
- B01J2219/00369—Pipettes capillary in multiple or parallel arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00277—Apparatus
- B01J2219/00351—Means for dispensing and evacuation of reagents
- B01J2219/00389—Feeding through valves
- B01J2219/004—Pinch valves
- B01J2219/00403—Pinch valves in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00274—Sequential or parallel reactions; Apparatus and devices for combinatorial chemistry or for making arrays; Chemical library technology
- B01J2219/00718—Type of compounds synthesised
- B01J2219/0072—Organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0832—Geometry, shape and general structure cylindrical, tube shaped
- B01L2300/0838—Capillaries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0481—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure squeezing of channels or chambers
Definitions
- the invention is in the field of chemical / biological analysis and relates to a method and a device according to the preambles of the corresponding claims.
- the method and device are used for storing and dispensing small amounts of liquid, in particular for parallel dispensing of small amounts of different stored liquids, as is necessary, for example, for the provision of samples by removing dissolved substances from substance libraries.
- Substance libraries contain large numbers of different substances, for example chemical compounds produced by combinatorial chemistry. From a substance library of this type, in which the substances are usually stored in dissolved form, a specific, usually very small amount (aliquot) of each substance or of a selected number of substances is taken for specific, biological or pharmaceutical tests and subjected to the test ,
- the tests or at least the sample preparations required for the tests are carried out in parallel on the largest possible number of substances.
- the substances are placed in cavities of microtest plates and treated in them, for example by adding reaction partners, by incubation and / or by separation, and then physical measurements subjected.
- the microtest plates preferably have a standardized shape and have 96, .384 or 1556 cavities (according to standards of the Society for Biomolecular Screening, SBS).
- Pipette arrangements of the type mentioned are described, for example, in publication EP-0565450 or US Pat. No. 5,195,403 (Bürgisser), arrangements with capillary-like instruments in publication US-5957167 (Pharmacopeia Inc.).
- Pipette arrangements are also used to introduce dissolved substances from a substance library into cavities of test plates.
- the substance library has a format that is matched to the format of the test plates and the arrangement of the instruments. that the substance library thus consists, for example, of a plurality of so-called library plates, a substance, for example dissolved in dimethyl sulfoxide, being stored in each cavity of each library plate.
- Such libraries thus consist, for example, of test plates with 96 wells each, from whose aliquots are removed with the aid of pipette arrangements with 96 pipettes and on test plates with 96 cavities (one test plate from a library plate) and with 384 cavities (one test plate from four library plates) ) or with 1556 cavities (a test plate consisting of 16 library plates), whereby the pipettes must be cleaned after each dispensing step.
- the library plates are usually stored at low temperatures and / or in a protective gas atmosphere. To remove substances, the library plates are removed from the protective gas atmosphere and warmed up at least to such an extent that the substance solutions are liquid.
- the object of the invention is to present a method and a device for storing and dispensing small amounts of liquid, the method and the device being intended to make it possible to measure amounts of liquid down to about 0.05 ⁇ l or even less, and possibly also dispense without contact and, if necessary, carry out large numbers of such dispensing steps in parallel.
- the loss of liquids and the risk of mutual contamination of liquids dispensed one after the other should be significantly smaller than is the case when known pipette arrangements are used.
- the method and device according to the invention are intended to allow substance libraries to be set up and used in which relatively large amounts of substance can be stored, so that a large number of samples can be prepared from each substance without this affecting the substances.
- the method and device according to the invention should not only be usable in connection with substance libraries and with the taking of sample quantities from substance libraries but also for any application in which small to very small amounts of liquid are to be dispensed, in particular to be dispensed in parallel.
- the liquids to be dispensed are stored in tubular containers, these containers preferably being closed at both ends and completely filled with the liquid.
- tubular containers For the dispensing of a predetermined, small amount of the liquid, an end region is separated from one end (dispensing end) of the corresponding tubular container.
- the new end area created by the separation which is open and has a defined liquid level, is then pressed together over a predetermined length, so that a small amount of liquid is pressed out of the container and released.
- the hose-like container is preferably pushed forward, the end region is separated off and the new end region created by the separation is pressed together.
- the inner cross-sectional area of the hose-like container is very constant over its length. Furthermore, it is necessary for the separation to be carried out in a precisely reproducible manner, specifically in an area of the container which has not been changed by a previous dispensing. It is also necessary that the liquid is always present in this area in the same way (no air bubbles etc.) so that the liquid level resulting from the separation is always the same. The compression must always be carried out in the same way. The reproducibility is best if the container is a completely filled capillary tube, which is closed on both sides, in which the liquid level created by the separation is independent of the fill level of the container or the length of the container and of the position of the container relative to gravity.
- containers with diameters that are too large for a capillary action or capillary containers with an open end that is not involved in the dispensing can also be used.
- the container can remain unused at any time for a long time or it can also be used for storage from a corresponding dispensing step. Siervoriques be removed while the liquid stored therein is always protected from contamination and environmental influences.
- the hose-like container consists of a flexible, compressible material, for example a flexible plastic polymer, which is preferably sealed by heat and / or pressure, e.g. weld, let.
- a flexible, compressible material for example a flexible plastic polymer
- the containers can have the shape of hollow cylinders with a round, oval or polygonal cross-section, but have a constant cross-section over their entire length, in particular a constant inner cross-section.
- the inner diameters of such tubular containers are typically in a range from 10-100 ⁇ m, for example in a range from 50 to 250 ⁇ m.
- the length of the tube-like containers is essentially arbitrary, typically from 5 to 50 cm, for example from 10 to 20 cm.
- the container length that is pressed together for a dispensing step is essentially also freely selectable and lies in a preferred range of 0.5 - 5 mm, e.g. at 1mm.
- Typical aliquots to be dispensed in a dispensing step have, for example, a volume of 1 - 1000 nanoliters, e.g. 50 nanoliters.
- the dispensing end of the tube-like container filled with liquid is positioned with the aid of a guide or holder.
- a suitable release agent With a suitable release agent, a piece is cut off from the dispensing end of the container before a first dispensing step, as a result of which a precisely defined, open end region with a defined liquid level is created.
- the open end region is pressed together with a suitable pressing means to a predetermined but freely selectable length, so that a desired volume of liquid is pressed out of the end region of the container.
- the pressing means is advantageously designed such that a contact-free delivery is possible.
- the tubular container is advantageously advanced around at least the compressed end region.
- the dispensing end can also be closed again before, during or after this advancement.
- the device and the dispensing end of the hose-like container are thus ready for a next dispensing step in which it is separated, pressed together and, if necessary, closed and pushed forward again.
- Tubular containers used for the storage and dispensing according to the invention can be created or filled in various ways.
- Capillary tubes that are open on both sides can be filled using the capillary force or by suction.
- the filled containers are then preferably closed gas-tight at both ends in such a way that they are completely filled with liquid.
- the liquids which are, for example, solutions of chemical and biological substances, can be stored in such containers with the complete exclusion of air and / or moisture and are nevertheless accessible at any time for dispensing. It is thus possible to produce substance libraries in a simple and inexpensive manner, which can be stored over a long period of time, in essentially any quantities and, moreover, in a very space-saving manner.
- the dispensing ends of a plurality of tubular containers are arranged in a linear or two-dimensional matrix; preferably in a grid that corresponds to the grid of a standard micro test plate, so that parallel dispensing can take place directly in micro test plates.
- the tubular containers are advantageously held or guided by suitable means, for example wound up on a spool or laid out on a correspondingly structured, essentially flat carrier plate or between two such carrier plates, for example in a straight line or in a spiral or serpentine line.
- suitable means for example wound up on a spool or laid out on a correspondingly structured, essentially flat carrier plate or between two such carrier plates, for example in a straight line or in a spiral or serpentine line.
- FIGS. 1a-1f show a schematically illustrated sequence of a first and a second embodiment of the method according to the invention with and without closing the hose-like container between dispensing steps;
- 3a-3d show a fourth embodiment of the method according to the invention.
- 4 shows an exemplary embodiment of the device according to the invention, which is designed for parallel dispensing steps;
- 5a-5b show an exemplary embodiment of a pressing means
- Figures la-le show in section the dispensing end 1 of a hose-like container, which is essentially a flexible, compressible hose and is filled with a liquid 3. Individual doses 10 are dispensed from the liquid 3.
- the dispensing end 1 is held in a predetermined position by an essentially one-piece, stationary guide 2, for which the guide 2 has a corresponding opening through which the dispensing end 1 is guided.
- a pressing means 4 connects to the guide 2 (provisionally in a non-active, i.e.
- the liquid level F can be convex, flat or concave depending on the capillary force, the separation process, the wettability of the tube material and / or the weight of the liquid 3. In a correspondingly equipped device and under standardized conditions, however, it is always the same, ie in particular as independent as possible from the filling level of the container, which leads to dispensed individual doses 10 which are always of the same size.
- the size this single dose is determined by the inside diameter d of the container and the length 1 over which it is pressed together.
- the pressing means 4 is now activated, that is, closed in the direction of the arrow, so that the amount of liquid which is in the end region to be compressed is pressed out of the open dispensing end (FIG. 1b, 1c) and is preferably collected directly in a cavity.
- the pressing means 4 can be moved on one side, all around or as shown, from two sides against the container end region.
- the container is, for example, pushed forward by the pressing means 4 (downward arrow direction, FIG. 1d), namely by at least the length 1 of the compressed end region.
- the length of the hose to be fed is somewhat longer than the compressed end area, since a further area that may have been deformed or welded by the pressing must also be removed.
- the compressed end region 5 'of the container is then closed (e.g. welded) by a closing means 6 (e.g. heating wire) integrated in the pressing means 4, for example.
- a closing means 6 e.g. heating wire
- the welding is preferably carried out simultaneously with the advancement of the container.
- the pressing means 4 is opened and moved back to its starting position, as shown in Fig. Le (essentially as Fig. La). The device is thus ready for a next dispensing step (separating, pressing together, advancing).
- FIGS. 1 a to 1 l The method shown in FIGS. 1 a to 1 l is particularly suitable for very sensitive substances which, as far as possible, remain completely without contact with the ambient air.
- Figures 2a-2b show a third embodiment of the method according to the invention.
- the same elements are designated with the same reference numerals as in Figures la-lf.
- the guide 2 and the pressing means 4 are separated (dividing line S in FIG. 2 a) and only then the pressing means returned to the starting position (Fig. 2b).
- the separating means (not shown) is preferably guided on the pressing means 4.
- the separating and resetting of the pressing means 4 is advantageously carried out only immediately before the next pressing together, so that the die-dispensing end of the container is kept closed by the pressing means 4 between dispensing steps.
- the pressing means 4 can also be used to, for example, move the separated end region 5 away from the side before the pressing means is reset and to dispose of it at a disposal point next to the dispensing position.
- FIGS. 3a-3d show a further embodiment of the method according to the invention, in which two pressing means 32 and 34 acting alternately on the container are used. While one press agent is responsible for the press function (pressing press agent), the other functions as a guide (leading press agent). The same elements are again identified by the same reference numbers.
- FIG. 3a shows the device after a dispensing step.
- the first pressing means 34 is the pressing means
- the second pressing means 32 is the leading pressing means.
- the container is advanced, for which at least the pressing means 34 is moved downward.
- the separated end region 5 is disposed of by the pressing means 34 at a disposal point (FIG. 3c) and the first pressing means 34 is above the first pressing means 38 positioned (Fig. 3d).
- the second pressing means 32 is the pressing and the first pressing means 34 is the leading pressing means.
- FIG. 4 shows the most important elements of a device according to the invention equipped for parallel dispensing.
- the device has a plurality of tube-like containers 41, each filled with a liquid, which are positioned for the dispensing in that the dispensing ends 1 are positioned in a row.
- This row arrangement preferably corresponds to the grid dimension of a standard micro test plate 48, so that the dispensing takes place directly into the micro test plate 48 (SBS standard: 9 mm distance with 96 cavities, 4.5 mm distance with 384 cavities, 2.25 mm distance with 1556 cavities, etc. .).
- the tubular containers 41 are essentially of any length. Its dispensing ends 1 are inserted in a stationary, one-piece guide plate 42, as is also shown in FIGS. 1a-1f and 2a-2b.
- the guide plate 42 has openings, the arrangement of which is adapted to the micro test plate 48 and the size of the container 41.
- the containers are rolled up on a spool 49, for example.
- two press bars 44.1 and 44.2 are arranged as pressing means, the press bars being movable at least in relation to and away from one another in the y direction.
- end regions are simultaneously separated from all dispensing ends 1 and new end regions are pressed together between the press bars 44.1 and 44.2. If, for example, a first row of cavities in the microtest plate 48 is thereby operated, the test plate 48 or the device is then shifted by one row in the y direction. After simultaneously pushing the containers forward and resetting the press beams, they are then separated and pressed together again.
- the compressed end regions of the containers 48 are separated before the pressing bars are moved apart, they can be moved for disposal of the separated end regions, for example in the y direction, to the side of the micro test plate 48 (disposal point) and moved apart there.
- Figures 5a and 5b show in two sections (section lines 5a-5a and 5b-5b) an exemplary embodiment of a pressing means 4, which can be used in a device according to the invention.
- the pressing means 4 has two pressing bars 44.1 and 44.2, between which the end region 5 of a hose-like container is shown pressed together.
- the two press bars 44.1 and 44.2 are also shown in dash-dot lines in a moved apart, ie non-pressing position.
- a pressing area 4.1 of the pressing means 4 directed towards the end of the container serves to press the end area 5 of the container, and a guiding area 4.2 of the guide directed away from the dispensing end.
- the design of the pressing means with the two areas mentioned allows a dividing line directly above the guide area 4.2, with separation nevertheless taking place in an area in which the container is not changed by being pressed together and / or welded.
- the recesses to be provided in the guide area 4.2 in the press bars 44.1 and 44.2 are to be adapted to the cross section through the tube-like container, the recesses in the press area 4.1 to the wall thickness.
- the pressing means 4 shown in FIGS. 5a-5b can be used in all of the methods and devices shown in FIGS. 1 to 4. If necessary, it can also be used without additional guidance.
- FIGS. 6a-6b show an arrangement of a hose-like container 41, which instead of the coil 49 shown in FIG. 4 in the device according to the invention can be used.
- the container 41 is positioned in a groove 59 of an essentially flat support plate 60, optionally between two such support plates 60 and 61, as is indicated in FIG. 6b.
- the groove 59 is, for example, as shown spiral and leads at least at one point to the edge of the support plate 60, from where the container extends to the guide 2 and pressing means 4.
- the support plates 60 and 61 or the groove 59 are to be designed in such a way that the container 41 is securely guided therein, but that there is no excessive frictional resistance to be overcome after each dispensing step.
- the storage and dispensing according to the invention is not limited to the use of capillaries as a tube-like container, that is, to the nano or microliter range.
- Hose-like containers with larger diameters can also be used in the same way, but it is then of course essential that the container end not used as the dispensing end is closed. Larger hose diameters are also possible in particular with liquids with a higher viscosity.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04802393A EP1732691A1 (de) | 2004-03-31 | 2004-12-24 | Verfahren und vorrichtung zum speichern und dispensieren von kleinen flüssigkeitsmengen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5532004 | 2004-03-31 | ||
CH553/04 | 2004-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005094995A1 true WO2005094995A1 (de) | 2005-10-13 |
Family
ID=34959548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2004/000753 WO2005094995A1 (de) | 2004-03-31 | 2004-12-24 | Verfahren und vorrichtung zum speichern und dispensieren von kleinen flüssigkeitsmengen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1732691A1 (de) |
WO (1) | WO2005094995A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4320787A (en) * | 1979-09-24 | 1982-03-23 | Mcmorrow John J | Blood segment processor |
EP0894532A2 (de) * | 1997-08-01 | 1999-02-03 | Grupo Grifols, S.A. | Vorrichtung und Verfahren zur Extraktion bzw. Handhabung von biologischen Flüssigkeiten in dünnwändigen Behältern |
WO2002087760A1 (de) * | 2001-04-30 | 2002-11-07 | Epr Labautomation Ag | Verfahren und anordnung zur speicherung und dosierung von kleinen flüssigkeitsmengen |
US6596237B1 (en) * | 1998-04-27 | 2003-07-22 | Nicholas F. Borrelli | Redrawn capillary imaging reservoir |
-
2004
- 2004-12-24 WO PCT/CH2004/000753 patent/WO2005094995A1/de active Application Filing
- 2004-12-24 EP EP04802393A patent/EP1732691A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4320787A (en) * | 1979-09-24 | 1982-03-23 | Mcmorrow John J | Blood segment processor |
EP0894532A2 (de) * | 1997-08-01 | 1999-02-03 | Grupo Grifols, S.A. | Vorrichtung und Verfahren zur Extraktion bzw. Handhabung von biologischen Flüssigkeiten in dünnwändigen Behältern |
US6596237B1 (en) * | 1998-04-27 | 2003-07-22 | Nicholas F. Borrelli | Redrawn capillary imaging reservoir |
WO2002087760A1 (de) * | 2001-04-30 | 2002-11-07 | Epr Labautomation Ag | Verfahren und anordnung zur speicherung und dosierung von kleinen flüssigkeitsmengen |
Also Published As
Publication number | Publication date |
---|---|
EP1732691A1 (de) | 2006-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3688156T2 (de) | Wegwerf-kapillarpipette mit vorwahl der fluessigkeitsmenge und verfahren zur herstellung einer fluessigen probe fuer untersuchungen. | |
DE3789834T2 (de) | Spitzen für medizinische Mikropipetten für schwer zugängliche Stellen und damit verbundene Verfahren. | |
DE60317305T2 (de) | Kontaktloses verfahren zur verteilung geringer flüssigkeitsmengen | |
DE2055948C3 (de) | Verfahren und Vorrichtung zum Einbringen einer Flüssigkeitsprobe aus einem Kapillarhohlraum in ein gelartiges Substrat | |
DE69022999T2 (de) | Wegwerfblutbehandlungskassette zum messen der haemostasen. | |
DE69925210T2 (de) | Spitze für eine Saugvorrichtung | |
EP1507592A1 (de) | Verfahren und vorrichtung zum dosieren kleiner flüssigkeitsvolumen | |
WO2006000115A1 (de) | Vorrichtung und verfahren zum anordnen von pipetten- oder dispenser-spitzen in einem system zum manipulieren von flüssigkeitsproben | |
DE3701250A1 (de) | Dosierpipette | |
DE2200730C3 (de) | Einrichtung zum Abmessen und Verteilen einer Vielzahl von kleinen Flüssigkeitsmengen | |
DE3047265C2 (de) | Einrichtung zur Überführung von Probengefäßen in Auffanggefäße | |
EP3478412B1 (de) | Vorrichtung zum bereitstellen von eine getrocknete flüssigkeitsmenge, insbesondere blut, aufweisenden, saugfähigen probenträgern | |
WO2009149873A1 (de) | Verfahren zum einbetten einer biologischen probe in eine transparente matrix zur untersuchung mittels single-plane-illumination-mikroskopie | |
DE4419291C2 (de) | Pipettenspitzen- und Einwegreaktionsgefäße-Bereitstellungs- und Entnahmevorrichtung | |
AT403096B (de) | Verfahren und vorrichtung zur vorbereitung mikroskopischer, insbesondere elektronenmikroskopischer präparate für die schnittpräparation | |
EP2193847A1 (de) | Koaxialnadel und Pipettiervorrichtung | |
DE2953265A1 (de) | Miniatur-reaktions-behaelter und verfahren und vorrichtung zur einfuehrung eines mikrovolumens einer fluessigkeit in diesen behaelter | |
DE10043345A1 (de) | Vorrichtung zur vollautomatischen Festphasenextraktion | |
WO2005094995A1 (de) | Verfahren und vorrichtung zum speichern und dispensieren von kleinen flüssigkeitsmengen | |
EP0925828B1 (de) | Vorrichtung zur Durchführung chemischer Reaktionsfolgen | |
DE10244960B4 (de) | Kartusche mit Verbindung für einen Pump-Antrieb und Handhabungs-System für einen flüssigen oder gasförmigen Stoff | |
WO2003098170A1 (de) | Vorrichtung zur dosierung von substanzen | |
WO2002087760A1 (de) | Verfahren und anordnung zur speicherung und dosierung von kleinen flüssigkeitsmengen | |
EP3600673B1 (de) | Verfahren und dosiervorrichtung zum kontaktdosieren von flüssigkeiten | |
WO1998045041A1 (de) | Entnahme- und abgabevorrichtung für gegenstände für laborbedarf, die zumindest teilweise eine hohlzylindrische kontur aufweisen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004802393 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2004802393 Country of ref document: EP |