CA2117696A1 - Liquid-dosing tube - Google Patents
Liquid-dosing tubeInfo
- Publication number
- CA2117696A1 CA2117696A1 CA002117696A CA2117696A CA2117696A1 CA 2117696 A1 CA2117696 A1 CA 2117696A1 CA 002117696 A CA002117696 A CA 002117696A CA 2117696 A CA2117696 A CA 2117696A CA 2117696 A1 CA2117696 A1 CA 2117696A1
- Authority
- CA
- Canada
- Prior art keywords
- tube
- test tube
- laboratory test
- liquid
- inner tube
- 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.)
- Abandoned
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
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
- B01L3/5082—Test tubes per se
-
- 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
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5021—Test tubes specially adapted for centrifugation purposes
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A liquid-dosing tube is provided with marks for the level of liquid. According to the invention, the opening of the dosing-tube is linked to a shortened inner tube and a space with a constant retaining volume is located between the closing-tube and the inner tube.
Description
- - C'~2 I 1 76~6 ~aboratory test tubes for the dosing of liquids Ihe present invention concerns a laboratory test tube for the dosing of liquids with which it is possible to retain in the laboratory test tube a predetermined amount of a liquid simply, pleasant to us-e and contamination-safe and to remove the remainder.
With this device, it is, on the one hand 7 possible to concentrste sedimentable solid materials and, on the other hand, to dilute dissolved materials.
10In the case of the investigation of sedimentable - component materials-of a liquid,~ for example urine or blood, a definite amount of the suspension is filled into a centrifuge tube, the solid materiaI coilected by centrifuging on the bottom of the tube, the super-natant solution poured off and the sediment resuspended in a definite, normally substantially smaller amount of liquid for the further investigation in order to obtain a concentrated sediment ~or the taking-up again, there is thereby normally used the same liquid which had previously been poured off. ~or this ~urpose, a definite amount must be pipetted off and again returned to the laboratory teat tube Apart from the work which this causes, there is also the danger of a contamination due to the handling of liquids which possibly contain pathogenic agents.
~n the other hsDd, it is frequently not possible to investigate solutions directly because the con-centration of the component materials lies too high - C ~ 3_ for the methods of investigation in order to obtain differentiable results. For this case, it is necessarg to dilute the soIutions which again is carried out via a series of pipetting steps. For the simplification of this dilution, it was, there-fore, suggested in DE-G 19 72 298 to provide on the bottom of a laborator~ test tube a narrow pocket hole in which, b~ capillar~ forces, in the case of empt~ing a comparativel~ large amount of a low defined amount of liquid collects which, in the case of again filling with dilution agent, distributes uniforml~ in the dilution agent due to the turbulences and concentration gradients brought about in the case of the filling B~ means of appropriate markings of the laborator~ test tube, def~nite dilution agent additions and thus dilution series can be produced easil~ and without additional adauvants. However, this process has the disadvantages that, on the one hand, by means of the capillar~ forces onl~ verg small amounts of liquid can be held back so that either the dilution factor is ver~ great or the amount of solution obtained after the dilution is relativel~ small and, on the other hand,. the pro-duction of reproducable capillar~ spaces requires a considerable technical manufacturing expense so that it is not possible to produce such test tubes as disposable articIes and, in the case of cleaning, the danger of a contamination again occurs C A ~
~urthermore, such a s~stem is not suitable for the concentration of sediments since a solid material cannot reproducabl~ again be dissolvéd out of the capillar~ s~stem.
Therefore, the task exists to provide a simple device which, on the one handt retains a definite amount of a liquid in a laboratory test tube and, on the other hand, permits a complete mixing up with sediment remairing behind or dilution solution.
I0 This task is solved b~ the features of the main claim and promG~ed b~ the features of the subsidiarg claims.
US-A 3,748,099 describes s lab~rator~ test tube with level markings and closure stopper which closes tightl~-around the test tube inwardl~ and outwardl~.
In this is slidablg inserted a canula 23 through which a definite amount of liquid can be pressed out. The illustrated device serves in this regard also more - as- a pipette with which definite amOuntS of solutions can be discharged and not as laborator~ test tube for the dosing of liquids which are retained in the test tube whereas an excess is removed.-G~-A 20 83 091 describes a test tube which is open on both sides, whereb~ b~ means of an inserted stopper or b~ means of a corresponding shaping of the test tube itself, a narrow inner canal (40) is formed through which the liquids can be introduced or with-drawn and in the outer region of which the solid - CA2i 176~6 ~
material collects in the case of centrifuging According to manner of proceeding, the canal must be correspond Dgl~ ver~ narrow since otherwise, in the case of centrifuging, a noteworthg amount of the solid material is present within the canal and would correspondingl~ be lost, US-A 3,48I,.712 describes a centrifuge glass with a bapered lower end (25) in which the sediment is retained,~ whereas the supernatant liquid can be removed In its plane upper part, the closure cap.(21) is formed as microscope glass so that subsequentl~, as illust-rated in Figure 8,~ the sediment can be poured out on to the plate, whereb~ an excess runs into the outer hollow space (35) A measurement is not connected therewith An alternative embodiment is described in Figures 9 and 10, whereb~ the~sediment deposits in the intermediate space of the cap from which, after removal of the liquid, it can again be transferred to a microscope plate b~ gentle shaking, as is illustrated in Figure 10 Also in the case of this manner of proceeding,.a constant retention volume for liquid, which is again to be passed back into the laborator~
test ~ube and there mixed, is not given, FR-A 2,1~,187 de-scribes an ampoule with differentlg wide parts so.:that an eas~ messurement of the liquid standing in these parts is possible, Furthermore, in Figure 10, a canuIa is also placed CA2i 1 76''?6 in the upper. opening through which it is possible to ~uck a certain liquid volume into the ampoule.
~he inwardlg protruding tube (56) thereb~y permits, in the case of multiple withdrawal procedure, air again to be expelled at intervals or again to force out excess liquid According to the invention, into the laboratorg test tube,. which possesse~ a cylinder-shaped opening, is inserted an inner tube, the outer diameter of which is 0,5 to 2 mm smaller than the inner diameter ofthe c~Dindrical opeDing so that a definite intermediate space is formed which, depending upon the length of the inserted inner tube, defines a retention space. In the case of the slow pouring out of the content of the laboratory test tube, this intermediate space fills with the outflowing liquid so that only the excess runs off and, in the case of the return of the test tube into the vertical position, completely runs out from this intermediate space ~herefore, in order to mske possible a complete return, the inter-mediate space must not be so narrow that capillar~
forces firml~ retain a part of the liquid in the case of CA2 1 l 76f,i~ -7 putting back, whereb~ there is given the lower limit of about 0,5 - 1 mm. However, on the other hand, the gap should aIso not be too wide since otherwise, for a particular reteDtion volume, the length of the iDner tube becomes correspondingIg smaller and thus additional errors could occur in the caseof the empt~ing_ ~urthermore, in the case of inherently narrow laboratorg- test tubes, the inner opening of the inserted inner tube serving in the case of filling and emptging becomes correspondinglg small which again can give rise to handling disadvantages ~herefore, it is advantageous to widen the opening in the form of a funnel or, if desired, also to provide with a pouring-out nozzle I5 Ihe secure connection between laboratorg test tube and inner tube is preferabl~ brought about in that the inner tube has a corresponding thickening on its upper part which can be pressed into the opening of the laboratorg test tube with a certain presf~ing force.
A formed-on collar can be provided in order to prevent a too deep pressing into the test tube. Alternativelg~
it is possible to form the collar externall~ gripping round the test tube and to hold this with a pressing force or to provide with a thread by means of which it can be screwed on to a co~responding counterthread of the laboratorg test tube. ~he thickening in the interior can then be omitted C ~ 2 i 1 7 6 9 6 --8--Laboratory test tubes today consist practically exclusively of glass or synthetic material and can be produced with verg smalltolerances. The inner tubes used according to the invention are preferably also made from synthetic material which, on the one hand, has sufficient elasticity in order to make a tight connection with the laboratory test tube and, on the other hand, is so inexpensive thst the whole device can be made as disposabIe article and, therefore, can be discarded after use. If laboratory test tube and inner tube are made from the same sgnthetic material, there is given additionally the advantageous possibilit~
of a recycling of the synthetic material without the two parts agsin having to be separated.
I5 The present invention is especially intended for the commercially-available centrifuge glasses which have a content of about 15 ml and are provided e.g.
with markings for 3, 5 and 10 ml In the c-ase of a length of about 10 cm" such tubes have an inner ~iameter of 14 mm. An inserted inner tube with 12 mm outer diameter and a length of 15 mm has a retention volume of 1 cm~. Therefore, with use of the given markings, dilution or concentration ratios of 1:~, 1:5 or 1:10 can very easily be adjusted without additional measurement aids.
~ lthough the device kas itself been developed for the concentration of sediments in centrifuge glasses, the same device can naturally also be used for vessels - C~21 1 16q6 of other shape so long as these possess an opening which fits together precisely-with the device For - exampIe, the 10 ml syringe is usually made from sgnthetic material which, for the centrifuging, possesses a shortenable piston rod, can also be provided after the centrifuging with such an inner tube and, in this wag, not only a de-finite amount of serum but aIso a definite amount of the sediment again resuspended in the serum are obtained which is available for the further invest-I0 igation. ~Iso other laboratorg vessels, such aslenmeyer flasks and round flasks etc., which possess a cgliDdricel opening with suitable diameter can be con-verted into a measurement vessel bg application of an appropriate retention device. Other forms of use are conceivable without, however, here being described in detail.
The invention is explained in more detail iD the accompanyin~ FiguFes without, however, it being limited there~to.
Fi~ure 1 shows a centrifuge glass with irserted retention sgstem, wherebg Figure la isa section through the~ sgstem,~ Figure lb shows the filled test tube, Figu~e lc shows the tiltedly positioned test tube with the liquid running out, Figure ld shows the test tube in the emptied state with the residual volume in the retention device and Fi~ure le shows the turned back test tube with the residual volume on the sediment.
Fi~ure 2 is an enlarged illustratIon of Figure le . . CA ~ l 1 76 ~
with the laborator~ test tube 1, the inserted inner tube 2 which has a thickening 3 which fits into the inner diameter of the laborator~-test tube 1 and a collar which outwardl~ encompasses the laboratorg test tube 1 Into the thickening 3 and the collar 4 is incorporated a funnel-shaped widening 5. The inter-mediate space between the inner tube 2 and the labor-ator~ test tube 1 defines the retention volume 7 which corresponds to the volume 7a in the repositioned state.
I0 A sediment 8 is indicated on the bottom of the test tube 2. Furthermore, level markings 6 are given which correspond e.g to a filling amount of 3 cm3 F~gure 3 shows a simplified embodimental form of the inner tube which merel~ consists of the inner tube 2 and the formed-on thickening 3.
Fi~ure 4 shows a devïce which, apart from the inner tube 2, the thickening 3 and the collar 4, also has a formed-on pouring nozzle 9 Figure 5 shows a commerciall~ available s~ringe with the outer tube 10~ the piston 11~ the har,d grip 13 provided with several breakage indentations 12, as well as a screwable closure cap 14 on which is formea the canula connection 15 Figure 5a shows the same s~ringe with the attachment according to the invention which, via a screw connection 16, is screwed on to the s~ringe. The hand grip 13 is broken off at the first breakage indentation 12 1 1 7'.6,q'6 ~ist of refereDces 1 Iaborator~ test tube 2 inner tube 3 thickening 4 collar-filling opening (widened funnel-shaped) 6 filling marking 7 retention volume.
7a retention volume after running back IO 8 sediment 9 pouring nozzle~
outer tube 11 piston 12 breakage indentation I5 13 hand grip I4 closure cap canula connection 16 screw connection
With this device, it is, on the one hand 7 possible to concentrste sedimentable solid materials and, on the other hand, to dilute dissolved materials.
10In the case of the investigation of sedimentable - component materials-of a liquid,~ for example urine or blood, a definite amount of the suspension is filled into a centrifuge tube, the solid materiaI coilected by centrifuging on the bottom of the tube, the super-natant solution poured off and the sediment resuspended in a definite, normally substantially smaller amount of liquid for the further investigation in order to obtain a concentrated sediment ~or the taking-up again, there is thereby normally used the same liquid which had previously been poured off. ~or this ~urpose, a definite amount must be pipetted off and again returned to the laboratory teat tube Apart from the work which this causes, there is also the danger of a contamination due to the handling of liquids which possibly contain pathogenic agents.
~n the other hsDd, it is frequently not possible to investigate solutions directly because the con-centration of the component materials lies too high - C ~ 3_ for the methods of investigation in order to obtain differentiable results. For this case, it is necessarg to dilute the soIutions which again is carried out via a series of pipetting steps. For the simplification of this dilution, it was, there-fore, suggested in DE-G 19 72 298 to provide on the bottom of a laborator~ test tube a narrow pocket hole in which, b~ capillar~ forces, in the case of empt~ing a comparativel~ large amount of a low defined amount of liquid collects which, in the case of again filling with dilution agent, distributes uniforml~ in the dilution agent due to the turbulences and concentration gradients brought about in the case of the filling B~ means of appropriate markings of the laborator~ test tube, def~nite dilution agent additions and thus dilution series can be produced easil~ and without additional adauvants. However, this process has the disadvantages that, on the one hand, by means of the capillar~ forces onl~ verg small amounts of liquid can be held back so that either the dilution factor is ver~ great or the amount of solution obtained after the dilution is relativel~ small and, on the other hand,. the pro-duction of reproducable capillar~ spaces requires a considerable technical manufacturing expense so that it is not possible to produce such test tubes as disposable articIes and, in the case of cleaning, the danger of a contamination again occurs C A ~
~urthermore, such a s~stem is not suitable for the concentration of sediments since a solid material cannot reproducabl~ again be dissolvéd out of the capillar~ s~stem.
Therefore, the task exists to provide a simple device which, on the one handt retains a definite amount of a liquid in a laboratory test tube and, on the other hand, permits a complete mixing up with sediment remairing behind or dilution solution.
I0 This task is solved b~ the features of the main claim and promG~ed b~ the features of the subsidiarg claims.
US-A 3,748,099 describes s lab~rator~ test tube with level markings and closure stopper which closes tightl~-around the test tube inwardl~ and outwardl~.
In this is slidablg inserted a canula 23 through which a definite amount of liquid can be pressed out. The illustrated device serves in this regard also more - as- a pipette with which definite amOuntS of solutions can be discharged and not as laborator~ test tube for the dosing of liquids which are retained in the test tube whereas an excess is removed.-G~-A 20 83 091 describes a test tube which is open on both sides, whereb~ b~ means of an inserted stopper or b~ means of a corresponding shaping of the test tube itself, a narrow inner canal (40) is formed through which the liquids can be introduced or with-drawn and in the outer region of which the solid - CA2i 176~6 ~
material collects in the case of centrifuging According to manner of proceeding, the canal must be correspond Dgl~ ver~ narrow since otherwise, in the case of centrifuging, a noteworthg amount of the solid material is present within the canal and would correspondingl~ be lost, US-A 3,48I,.712 describes a centrifuge glass with a bapered lower end (25) in which the sediment is retained,~ whereas the supernatant liquid can be removed In its plane upper part, the closure cap.(21) is formed as microscope glass so that subsequentl~, as illust-rated in Figure 8,~ the sediment can be poured out on to the plate, whereb~ an excess runs into the outer hollow space (35) A measurement is not connected therewith An alternative embodiment is described in Figures 9 and 10, whereb~ the~sediment deposits in the intermediate space of the cap from which, after removal of the liquid, it can again be transferred to a microscope plate b~ gentle shaking, as is illustrated in Figure 10 Also in the case of this manner of proceeding,.a constant retention volume for liquid, which is again to be passed back into the laborator~
test ~ube and there mixed, is not given, FR-A 2,1~,187 de-scribes an ampoule with differentlg wide parts so.:that an eas~ messurement of the liquid standing in these parts is possible, Furthermore, in Figure 10, a canuIa is also placed CA2i 1 76''?6 in the upper. opening through which it is possible to ~uck a certain liquid volume into the ampoule.
~he inwardlg protruding tube (56) thereb~y permits, in the case of multiple withdrawal procedure, air again to be expelled at intervals or again to force out excess liquid According to the invention, into the laboratorg test tube,. which possesse~ a cylinder-shaped opening, is inserted an inner tube, the outer diameter of which is 0,5 to 2 mm smaller than the inner diameter ofthe c~Dindrical opeDing so that a definite intermediate space is formed which, depending upon the length of the inserted inner tube, defines a retention space. In the case of the slow pouring out of the content of the laboratory test tube, this intermediate space fills with the outflowing liquid so that only the excess runs off and, in the case of the return of the test tube into the vertical position, completely runs out from this intermediate space ~herefore, in order to mske possible a complete return, the inter-mediate space must not be so narrow that capillar~
forces firml~ retain a part of the liquid in the case of CA2 1 l 76f,i~ -7 putting back, whereb~ there is given the lower limit of about 0,5 - 1 mm. However, on the other hand, the gap should aIso not be too wide since otherwise, for a particular reteDtion volume, the length of the iDner tube becomes correspondingIg smaller and thus additional errors could occur in the caseof the empt~ing_ ~urthermore, in the case of inherently narrow laboratorg- test tubes, the inner opening of the inserted inner tube serving in the case of filling and emptging becomes correspondinglg small which again can give rise to handling disadvantages ~herefore, it is advantageous to widen the opening in the form of a funnel or, if desired, also to provide with a pouring-out nozzle I5 Ihe secure connection between laboratorg test tube and inner tube is preferabl~ brought about in that the inner tube has a corresponding thickening on its upper part which can be pressed into the opening of the laboratorg test tube with a certain presf~ing force.
A formed-on collar can be provided in order to prevent a too deep pressing into the test tube. Alternativelg~
it is possible to form the collar externall~ gripping round the test tube and to hold this with a pressing force or to provide with a thread by means of which it can be screwed on to a co~responding counterthread of the laboratorg test tube. ~he thickening in the interior can then be omitted C ~ 2 i 1 7 6 9 6 --8--Laboratory test tubes today consist practically exclusively of glass or synthetic material and can be produced with verg smalltolerances. The inner tubes used according to the invention are preferably also made from synthetic material which, on the one hand, has sufficient elasticity in order to make a tight connection with the laboratory test tube and, on the other hand, is so inexpensive thst the whole device can be made as disposabIe article and, therefore, can be discarded after use. If laboratory test tube and inner tube are made from the same sgnthetic material, there is given additionally the advantageous possibilit~
of a recycling of the synthetic material without the two parts agsin having to be separated.
I5 The present invention is especially intended for the commercially-available centrifuge glasses which have a content of about 15 ml and are provided e.g.
with markings for 3, 5 and 10 ml In the c-ase of a length of about 10 cm" such tubes have an inner ~iameter of 14 mm. An inserted inner tube with 12 mm outer diameter and a length of 15 mm has a retention volume of 1 cm~. Therefore, with use of the given markings, dilution or concentration ratios of 1:~, 1:5 or 1:10 can very easily be adjusted without additional measurement aids.
~ lthough the device kas itself been developed for the concentration of sediments in centrifuge glasses, the same device can naturally also be used for vessels - C~21 1 16q6 of other shape so long as these possess an opening which fits together precisely-with the device For - exampIe, the 10 ml syringe is usually made from sgnthetic material which, for the centrifuging, possesses a shortenable piston rod, can also be provided after the centrifuging with such an inner tube and, in this wag, not only a de-finite amount of serum but aIso a definite amount of the sediment again resuspended in the serum are obtained which is available for the further invest-I0 igation. ~Iso other laboratorg vessels, such aslenmeyer flasks and round flasks etc., which possess a cgliDdricel opening with suitable diameter can be con-verted into a measurement vessel bg application of an appropriate retention device. Other forms of use are conceivable without, however, here being described in detail.
The invention is explained in more detail iD the accompanyin~ FiguFes without, however, it being limited there~to.
Fi~ure 1 shows a centrifuge glass with irserted retention sgstem, wherebg Figure la isa section through the~ sgstem,~ Figure lb shows the filled test tube, Figu~e lc shows the tiltedly positioned test tube with the liquid running out, Figure ld shows the test tube in the emptied state with the residual volume in the retention device and Fi~ure le shows the turned back test tube with the residual volume on the sediment.
Fi~ure 2 is an enlarged illustratIon of Figure le . . CA ~ l 1 76 ~
with the laborator~ test tube 1, the inserted inner tube 2 which has a thickening 3 which fits into the inner diameter of the laborator~-test tube 1 and a collar which outwardl~ encompasses the laboratorg test tube 1 Into the thickening 3 and the collar 4 is incorporated a funnel-shaped widening 5. The inter-mediate space between the inner tube 2 and the labor-ator~ test tube 1 defines the retention volume 7 which corresponds to the volume 7a in the repositioned state.
I0 A sediment 8 is indicated on the bottom of the test tube 2. Furthermore, level markings 6 are given which correspond e.g to a filling amount of 3 cm3 F~gure 3 shows a simplified embodimental form of the inner tube which merel~ consists of the inner tube 2 and the formed-on thickening 3.
Fi~ure 4 shows a devïce which, apart from the inner tube 2, the thickening 3 and the collar 4, also has a formed-on pouring nozzle 9 Figure 5 shows a commerciall~ available s~ringe with the outer tube 10~ the piston 11~ the har,d grip 13 provided with several breakage indentations 12, as well as a screwable closure cap 14 on which is formea the canula connection 15 Figure 5a shows the same s~ringe with the attachment according to the invention which, via a screw connection 16, is screwed on to the s~ringe. The hand grip 13 is broken off at the first breakage indentation 12 1 1 7'.6,q'6 ~ist of refereDces 1 Iaborator~ test tube 2 inner tube 3 thickening 4 collar-filling opening (widened funnel-shaped) 6 filling marking 7 retention volume.
7a retention volume after running back IO 8 sediment 9 pouring nozzle~
outer tube 11 piston 12 breakage indentation I5 13 hand grip I4 closure cap canula connection 16 screw connection
Claims (4)
1. Laboratory test tube for the dosing of liquids, whereby the laboratory test tube (1) possesses markings (6) for the filling with the liquid, with which opening of the laboratory test tube (1) is connected a shortened inner tube (2), whereby, between laboratory test tube (1) and inner tube (2), is present a space with constant retention volume (7) in the case of the pouring out of the tube content, characterised in that the intermediate space has a width of at least 0.5 to maximum 1 mm.
2. Laboratory test tube according to claim 1, characterised in that laboratory test tube (1) and inner tube (2) consist of recyclable synthetic material which are connected via a press connection.
3. Laboratory test tube according to claim 1 or 2, characterised in that the inner tube (2) consists of a cylindrical tube, by the length and outer diameter of which and the inner diameter of the laboratory test tube (1) the retention volume (7) is defined, the inner tube (2) has on its upper end a thickening (3), the outer diameter of which corresponds to the inner diameter of the laboratory test tube (1), the inner tube (2) has a collar (4) which encompasses the opening of the laboratory test tube (1) and collar (4) and thickening (3) comprise a funnel-shaped filling opening (5).
4. Use of laboratory test tubes according to one of claims 1 to 3 for the resuspension of the sediments obtained by centrifuging.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG9203973.1U | 1992-03-25 | ||
| DE9203973U DE9203973U1 (en) | 1992-03-25 | 1992-03-25 | |
| DEP4243478.5 | 1992-12-22 | ||
| DE4243478A DE4243478A1 (en) | 1992-03-25 | 1992-12-22 | Laboratory tubes for dosing liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2117696A1 true CA2117696A1 (en) | 1993-09-26 |
Family
ID=25921616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002117696A Abandoned CA2117696A1 (en) | 1992-03-25 | 1993-03-16 | Liquid-dosing tube |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0632749B1 (en) |
| AT (1) | ATE128645T1 (en) |
| AU (1) | AU3749093A (en) |
| CA (1) | CA2117696A1 (en) |
| DE (2) | DE4243478A1 (en) |
| WO (1) | WO1993018858A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055988A (en) * | 2012-08-27 | 2013-04-24 | 浙江硕华医用塑料有限公司 | Centrifugal tube |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2014739B1 (en) * | 2015-04-30 | 2017-01-18 | Labonovum B V | Fluid collection device. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL252802A (en) * | 1959-11-20 | |||
| US3718133A (en) * | 1971-01-12 | 1973-02-27 | Damon Corp | Container unit for liquid samples |
| US3748099A (en) * | 1971-09-07 | 1973-07-24 | Toluca Ind Corp | Liquid handling device |
| US4342724A (en) * | 1980-08-21 | 1982-08-03 | E. R. Squibb & Sons, Inc. | Red cell labeling vial |
-
1992
- 1992-12-22 DE DE4243478A patent/DE4243478A1/en not_active Withdrawn
-
1993
- 1993-03-16 WO PCT/EP1993/000615 patent/WO1993018858A1/en active IP Right Grant
- 1993-03-16 EP EP93920526A patent/EP0632749B1/en not_active Expired - Lifetime
- 1993-03-16 AT AT93920526T patent/ATE128645T1/en not_active IP Right Cessation
- 1993-03-16 CA CA002117696A patent/CA2117696A1/en not_active Abandoned
- 1993-03-16 DE DE59300720T patent/DE59300720D1/en not_active Expired - Lifetime
- 1993-03-16 AU AU37490/93A patent/AU3749093A/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055988A (en) * | 2012-08-27 | 2013-04-24 | 浙江硕华医用塑料有限公司 | Centrifugal tube |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59300720D1 (en) | 1995-11-09 |
| ATE128645T1 (en) | 1995-10-15 |
| EP0632749B1 (en) | 1995-10-04 |
| AU3749093A (en) | 1993-10-21 |
| EP0632749A1 (en) | 1995-01-11 |
| DE4243478A1 (en) | 1993-09-30 |
| WO1993018858A1 (en) | 1993-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3481712A (en) | Sediment container and cap and analysis technique | |
| US3596652A (en) | Fluid separatory device | |
| CA2245401C (en) | Collection container assembly | |
| CA1051222A (en) | Method and apparatus for preparation of liquids containing suspended material for examination | |
| AU748070B2 (en) | Collection container assembly | |
| US3518804A (en) | Pipette assembly having precise quantity stabilized reagent in liquid form and method of preparing same | |
| US5132232A (en) | Method and apparatus for preparation of liquids for examination | |
| CA1175680A (en) | Apparatus for microscopic examination of specimen | |
| PL185194B1 (en) | Blood sampling vessel | |
| US5915583A (en) | Container | |
| US4933148A (en) | Pipetter barrel extension tube | |
| CA2097283C (en) | Tube liquid dispenser | |
| US5725832A (en) | Laboratory test tubes for the dosing of liquids | |
| FI65386C (en) | SAEKERHETSANORDNING FOER TILLSLUTNING AV PROVROER | |
| EP0901821B1 (en) | Collection container assembly | |
| EP0901817B1 (en) | Collection container assembly | |
| EP0891742B1 (en) | Body fluid collection vessel having reduced capacity | |
| US6612997B1 (en) | Collection container assembly | |
| US4563332A (en) | Liquid sampling apparatus with retention means | |
| CA2117696A1 (en) | Liquid-dosing tube | |
| EP0901819B1 (en) | Collection container assembly | |
| EP0029361B1 (en) | Liquid sample collector device | |
| JPH0645242Y2 (en) | Simple sample collection dripping container | |
| AU8301398A (en) | Collection container assembly | |
| CA2245126C (en) | Collection container assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |