EP0261023B1 - Procédé de caractérisation d'un instrument de laboratoire et pipette ainsi caractérisée par coloration - Google Patents

Procédé de caractérisation d'un instrument de laboratoire et pipette ainsi caractérisée par coloration Download PDF

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Publication number
EP0261023B1
EP0261023B1 EP87402014A EP87402014A EP0261023B1 EP 0261023 B1 EP0261023 B1 EP 0261023B1 EP 87402014 A EP87402014 A EP 87402014A EP 87402014 A EP87402014 A EP 87402014A EP 0261023 B1 EP0261023 B1 EP 0261023B1
Authority
EP
European Patent Office
Prior art keywords
pipette
piece
coloured
process according
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.)
Expired - Lifetime
Application number
EP87402014A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0261023A1 (fr
Inventor
Hervé Judic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALP Articles de Laboratoire de Precision SAS
Original Assignee
ALP Articles de Laboratoire de Precision SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALP Articles de Laboratoire de Precision SAS filed Critical ALP Articles de Laboratoire de Precision SAS
Priority to AT87402014T priority Critical patent/ATE76212T1/de
Publication of EP0261023A1 publication Critical patent/EP0261023A1/fr
Application granted granted Critical
Publication of EP0261023B1 publication Critical patent/EP0261023B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • 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
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids

Definitions

  • the invention relates to a method for characterizing a laboratory pipette allowing a user to identify immediately and without possible error at least the maximum or nominal volume by coloring.
  • a longitudinal strip of paint is applied opposite the graduations.
  • the major drawback of this solution is that the identification of the volume is only possible if the pipette is in a position such that the strip of paint is oriented towards the user. Otherwise, the graduations hide the paint strip.
  • this strip of paint is affixed on the periphery of the instrument to be seen in any position (US Pat. No. 3,406,573), it may hinder reading and measurement, and may deteriorate as a result of manipulation or of transportation. The affixing of such a strip is, more expensive to achieve.
  • a colored plastic tip is used to associate the suction end of the pipette with suction.
  • This tip is made of colored injected plastic and is hermetically associated with the pipette, that is to say without leakage at the junction.
  • a protective filter material can be inserted into the nozzle.
  • the disadvantage of this embodiment is that it is too sophisticated and far too expensive.
  • the hermetic junction of the injected nozzle or tube poses many problems and must be carried out by expensive techniques (for example ultrasonic welding).
  • the invention aims to remedy the above-mentioned drawbacks of known characterization methods and pipettes, and relates to a method for characterizing a pipette which ensures immediate identification at first sight, perfect and without possible error, does not not altering the sterility properties of the instrument, inert with respect to chemical and / or biological substances and which does not increase or even decrease the cost price of the instrument thus characterized.
  • Another object of the invention is to allow the characterization of a pipette in a safe manner, without possible deterioration of this characterization during handling, transport, or bringing the instrument into contact with aggressive external agents. , and without harming the qualities of the instrument (precision, reliability of use, safety ).
  • the invention also relates to a pipette whose volume is identifiable immediately and without possible error, which can be completely sterile and inert vis-à-vis chemical and / or biological substances, and whose cost price is less than or equal to that of known pipettes.
  • the invention relates to a method for characterizing a laboratory pipette comprising at least one transparent tube by colored characterization means allowing the user to identify immediately and without possible error at least the maximum volume or nominal, characterized in that at least one piece of colored material is inserted, the color of which corresponds to said volume inside the suction end of the pipette, so that this piece of colored material is visible from the outside in all circumstances while being sheltered from external aggressions.
  • the characterization means are inserted in a part of the tube free of graduations and distant from any graduation or inscription.
  • the invention also provides a laboratory pipette of the type comprising colored characterization means whose color corresponds to the maximum or nominal volume of the pipette, allowing a user to identify immediately and without possible error the maximum or nominal volume of the pipette , characterized in that the characterization means consist of at least one piece of colored material which is inserted into the suction end of the pipette. In the case where a sterile protection must be provided at the suction end, the latter is colored and constitutes the means for characterizing the volume of the pipette.
  • the invention therefore makes it possible to produce laboratory instruments of very safe use, at very low cost price and perfectly sterile and inert. It will be more advantageously noted that the coloration is all the more effective the support is a fibrous or cellular material and that it is visible through the tube. It will also be noted that the invention allows the coding of several characteristics on the same laboratory instrument in a visible manner from the outside whatever the position of the instrument and protected from external aggressions, and this, so economical and easy, while this was not possible thanks to the prior art.
  • the invention relates to a method for characterizing a laboratory pipette 1 comprising at least one transparent tube 2.
  • a pipette 1 makes it possible to withdraw a precise dose of a chemical and / or biological substance, and comprises a graduated tube 2 on at least part of its external surface 3, a sampling end 4 and a suction end 5.
  • the operation of such a pipette 1 is well known in the prior art and will therefore not be detailed.
  • Such a characterization process is applicable to other laboratory instruments, since they comprise at least one transparent tube 2 (columns, test tubes, etc.), and allows the user to identify immediately, at the first look, and without possible error, at least one characteristic, for example the maximum volume, or useful, or nominal, or the conditions of use ...
  • means 6 for characterization are inserted inside 7 of the tube 2, so that these means 6 are visible from the outside in all circumstances, that is to say whatever the conditions of use of the instrument and its position vis-à-vis the user's gaze.
  • the characterization means 6 are preferably inserted into a part 8 of the tube 2 free of graduations 9 and distant from any graduation or inscription, so as to be all the more visible through the transparent tube 2 and not to affect the accuracy, reliability or safety of use of the instrument.
  • Preferably colored characterization means 6 are used which define a color code in one-to-one relation with the values of the characteristic of the instrument 1.
  • color code in one-to-one relation with the values of the characteristic of the instrument 1.
  • the means 6 of characterization at least a piece 6 of a material which lets pass the gases (case of a pipette), or hermetic and in this
  • the characterization means 6 can also serve as means for closing the tube 2.
  • At least one piece 6 made of a hydrophobic material is used so as to limit measurement errors, accidents or deterioration of the chemical and / or biological substances if these come into contact with or in the vicinity of the characterization means 6 .
  • each piece 6 being of a single color corresponding to a value of a characteristic, the pieces 6 being superimposed on each other. in tube 2.
  • the dye used to color a piece 6 constituting the characterization means 6 is inert vis-à-vis the chemical and / or biological substances so that the characterization means 6 do not modify the physical or chemical properties of these substances.
  • the dye used is of the light-resistant type, and advantageously to liquids.
  • the invention also relates to a laboratory pipette 1 of the type comprising characterization means 6 allowing a user to identify immediately and without possible error the maximum or nominal volume of the pipette 1, characterized in that the characterization means 6 consist of at least one piece 6 of colored material, the color of which corresponds to the maximum or nominal volume of the pipette 1, and which is inserted into the suction end 5 of the pipette 1.
  • the pipette 1 according to the invention is advantageously of the disposable type. In the case where it must include a sterile protection at its suction end 5, this protection is colored and constitutes in itself means 6 for characterizing the volume of the pipette 1.
  • the pipette 1 shown is made up of two parts: a graduated dosing tube 2 extruded from a single piece, and a buffer 6 of colored material inserted into the suction end 5 which has the function of producing means for characterizing the volume and protection by forming a sterile barrier between the mouth of the user and the substances used in the pipette 1.
  • the piece 6 of colored material is preferably of fibrous or cellular hydrophobic material, in particular of wood viscose or cellulose or cotton or other.
  • Other synthetic or natural materials may be used as soon as they can be sterile, inert, hydrophobic, easily colored, low cost, and holding by contact in the tube 2.
  • the dimensions of the colored buffer 6 will be adapted as a function of the diameter of the tube 2 at its suction end 5 so as to be able to be inserted and to be wedged by itself in the end 5 of the tube 2 by simple contact with the walls internal, as is known from the prior art.
  • the pad 6 of colored material has a length such that its end 11, facing inward 7 of the pipette 1 is distant from the maximum level 12 of the pipette 1, for example, materialized by a double graduation 12.
  • the fluid taken from the pipette 1 can normally never come into contact with the buffer 6 of colored material.
  • the sampling end 4 of the pipette 1 is formed in a point.
  • the suction end 5 has a diameter less than the diameter of the graduated part 10 of the tube 2
  • the internal diameter of this end 5 is advantageously between 2 mm and 8 mm, in particular of the order of 3 to 5 mm.
  • the length of the buffer 6 is less than that of the suction end 5, so that this buffer 6 does not open into the part 10 of the pipette 1 of large diameter.
  • the dye used must be resistant to light, and preferably also to washing, although this is not necessary since the substances dosed in the pipette 1 are not supposed to come into contact with the buffer 6.
  • the tube 2 is extruded continuously which is graduated, then a protective pad 6 previously tinted is inserted into the suction end 5.
  • the assembly is then packaged and then sterilized, for example with ethylene oxide followed by rinsing with air, or even with nuclear radiation.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP87402014A 1986-09-12 1987-09-09 Procédé de caractérisation d'un instrument de laboratoire et pipette ainsi caractérisée par coloration Expired - Lifetime EP0261023B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402014T ATE76212T1 (de) 1986-09-12 1987-09-09 Vorrichtung zum kennzeichnen eines laborinstrumentes und eine entsprechend mittels farben gekennzeichnete pipette.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612787A FR2604013B1 (fr) 1986-09-12 1986-09-12 Procede de caracterisation d'un instrument de laboratoire et pipette ainsi caracterisee par coloration
FR8612787 1986-09-12

Publications (2)

Publication Number Publication Date
EP0261023A1 EP0261023A1 (fr) 1988-03-23
EP0261023B1 true EP0261023B1 (fr) 1992-05-13

Family

ID=9338894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402014A Expired - Lifetime EP0261023B1 (fr) 1986-09-12 1987-09-09 Procédé de caractérisation d'un instrument de laboratoire et pipette ainsi caractérisée par coloration

Country Status (6)

Country Link
EP (1) EP0261023B1 (enrdf_load_stackoverflow)
AT (1) ATE76212T1 (enrdf_load_stackoverflow)
DE (1) DE3779025D1 (enrdf_load_stackoverflow)
ES (1) ES2032459T3 (enrdf_load_stackoverflow)
FR (1) FR2604013B1 (enrdf_load_stackoverflow)
GR (1) GR3005345T3 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374280B1 (de) * 1988-12-20 1993-10-06 Schleicher & Schuell GmbH Einmalfilterhalter
ES1042341Y (es) * 1999-03-17 2000-06-01 Rillo Santiago Martin Canula para inseminacion artificial de ganado porcino.
ES1050966Y (es) * 2002-01-28 2002-10-01 Artiaga Emilio Rabal Dispensador de aliños.
FR2845933B1 (fr) * 2002-10-16 2005-02-11 Articles De Laboratoire De Pre Pipette de laboratoire comportant une tresse de fils de fibres synthetiques entrelaces d'une couleur correspondant a au moins une caracteristique de la pipette
CN102847568A (zh) * 2012-08-27 2013-01-02 浙江硕华医用塑料有限公司 塞芯一次性移液管
CN102847570A (zh) * 2012-08-29 2013-01-02 浙江硕华医用塑料有限公司 一次性吸量管
CN102847569A (zh) * 2012-08-29 2013-01-02 浙江硕华医用塑料有限公司 一次性移液管
CH718088A1 (de) * 2020-11-24 2022-05-31 Integra Biosciences Ag Pipette und Pipettierhilfe mit 2-Zeichen-Codierung.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB248678A (en) * 1925-11-25 1926-03-11 Annie Shenstone Alexander A distinctive cork to be used in bottles, for medical purposes, other than those containing medicine to be taken
FR66074E (enrdf_load_stackoverflow) * 1952-05-14 1956-05-03
US3406573A (en) * 1967-03-10 1968-10-22 Dade Reagents Inc Capillary pipette and adapter-holder therefor
US3662706A (en) * 1969-01-17 1972-05-16 Wallac Oy Identifying device for specimen containers containing radioactive substances
FR2056974A1 (en) * 1969-08-04 1971-05-07 Shinetsu Chemical Co Air permeable, sterilisable stoppers for culture vessels
DE1598123A1 (de) * 1972-05-18 1969-09-18 Becton Dickinson Co Automatische Pipette
NO128095B (enrdf_load_stackoverflow) * 1972-06-29 1973-10-01 O Foss
FR2258896B1 (enrdf_load_stackoverflow) * 1974-01-29 1978-03-17 Loing Verreries
DE2603410A1 (de) * 1976-01-29 1977-08-11 Siemens Ag Probenroehrchen fuer fluessigkeitsproben
GB1567325A (en) * 1977-03-28 1980-05-14 Guest Medical & Dental Prod Sedimentation tests
FR2501636A1 (fr) * 1981-03-13 1982-09-17 Lecat Pierre Bouchon fonctionnel en resine synthetique expansee

Also Published As

Publication number Publication date
EP0261023A1 (fr) 1988-03-23
ES2032459T3 (es) 1993-02-16
GR3005345T3 (enrdf_load_stackoverflow) 1993-05-24
DE3779025D1 (de) 1992-06-17
FR2604013B1 (fr) 1989-03-24
ATE76212T1 (de) 1992-05-15
FR2604013A1 (fr) 1988-03-18

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