FR2319117A1 - Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube - Google Patents

Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube

Info

Publication number
FR2319117A1
FR2319117A1 FR7523282A FR7523282A FR2319117A1 FR 2319117 A1 FR2319117 A1 FR 2319117A1 FR 7523282 A FR7523282 A FR 7523282A FR 7523282 A FR7523282 A FR 7523282A FR 2319117 A1 FR2319117 A1 FR 2319117A1
Authority
FR
France
Prior art keywords
wire
plunger
vol
capillary tube
capillary
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.)
Granted
Application number
FR7523282A
Other languages
French (fr)
Other versions
FR2319117B1 (en
Inventor
Jacques Augier
Jean-Pierre Gerlier
Aldo Lucenti
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.)
Institut Pasteur de Lille
Original Assignee
Institut Pasteur de Lille
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 Institut Pasteur de Lille filed Critical Institut Pasteur de Lille
Priority to FR7523282A priority Critical patent/FR2319117A1/en
Priority to BE169054A priority patent/BE844304A/en
Priority to IT5056576A priority patent/IT1066366B/en
Priority to DE19762633530 priority patent/DE2633530A1/en
Publication of FR2319117A1 publication Critical patent/FR2319117A1/en
Application granted granted Critical
Publication of FR2319117B1 publication Critical patent/FR2319117B1/fr
Granted legal-status Critical Current

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
    • B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
    • B01L3/022—Capillary pipettes, i.e. having very small bore

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Abstract

A syringe has a tubular plunger body to the end of which is fitted a capillary tube held and sealed at its upper end in the housing by an elastic joint and open at its lower end. Inside the capillary tube a calibrated wire moves, this wire also passes through and is sealed against the elastic joint. The joint fits into a housing at the bottom of the plunger body, this housing having an outer wider section connected by a cone part to a narrower section so as to compress the joint against the capillary and the wire. Movement of the calibrated wire in the capillary displaces a vol. of liq. equal to the vol. change of the wire in the tube. The wire is always separated from the liq. by a vol. of air. Movement of the wire is achieved by moving a plunger, to which the wire is attached, inside the tubular plunger body. This plunger is a rod with parallel portions of cylinders having a radius slightly less than the inside radius of the tube, the cylinders having their axes displaced in relation to each other to from a series of steps on the rod. The steps rest on the free end of the tubular body and the distance between each step is calculated to give a precise vol. of liq. in the capillary tube. Alternatively the rod can have teeth that engage in a clip on the tubular body or vice versa, the teeth having specified spacings, and are disengaged from the clip by rotating the plunger. Used for taking and giving very small quantities of liqs. esp. for dosing applications. Wire does not contact successive liqs. so does not risk contamination. Gives great accuracy of small vols.
FR7523282A 1975-07-25 1975-07-25 Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube Granted FR2319117A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7523282A FR2319117A1 (en) 1975-07-25 1975-07-25 Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube
BE169054A BE844304A (en) 1975-07-25 1976-07-19 DEVICE FOR TAKING AND / OR DELIVERY OF LOW DOSE QUANTITIES OF LIQUID
IT5056576A IT1066366B (en) 1975-07-25 1976-07-22 DEVICE FOR WITHDRAWING OR DISPENSING WEAK QUANTITIES OF LIQUID
DE19762633530 DE2633530A1 (en) 1975-07-25 1976-07-26 DEVICE FOR ACCEPTING AND / OR DISPENSING SMALL DOSED QUANTITIES OF LIQUIDS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7523282A FR2319117A1 (en) 1975-07-25 1975-07-25 Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube

Publications (2)

Publication Number Publication Date
FR2319117A1 true FR2319117A1 (en) 1977-02-18
FR2319117B1 FR2319117B1 (en) 1981-07-24

Family

ID=9158368

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523282A Granted FR2319117A1 (en) 1975-07-25 1975-07-25 Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube

Country Status (4)

Country Link
BE (1) BE844304A (en)
DE (1) DE2633530A1 (en)
FR (1) FR2319117A1 (en)
IT (1) IT1066366B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024313A1 (en) * 1979-08-20 1981-03-04 C.H. Boehringer Sohn Method of residue-free dispensing of small amounts of liquid
EP0147628A2 (en) * 1984-01-05 1985-07-10 Drummond Scientific Company Disposable capillary tube device
US6814936B1 (en) 1999-07-01 2004-11-09 Goran Enhorning Pipette assembly having a small volume disposable tip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082263A1 (en) * 1981-12-10 1983-06-29 The Perkin-Elmer Corporation Sample introduction for chemical analysis by spectrometry/liquid chromatography

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3248950A (en) * 1964-05-25 1966-05-03 Dow Chemical Co Stop mechanism for pipette filling device
US3498135A (en) * 1968-11-13 1970-03-03 Baxter Laboratories Inc Pipette
DE2203174A1 (en) * 1972-01-24 1973-08-16 Sarstedt Kunststoff DEVICE FOR REMOVING, DISTRIBUTING AND STORING LIQUIDS
DD107392A1 (en) * 1972-06-08 1974-08-05
US3815790A (en) * 1972-09-18 1974-06-11 Kensington Scient Corp Precision liquid pipetting devices

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024313A1 (en) * 1979-08-20 1981-03-04 C.H. Boehringer Sohn Method of residue-free dispensing of small amounts of liquid
EP0147628A2 (en) * 1984-01-05 1985-07-10 Drummond Scientific Company Disposable capillary tube device
EP0147628A3 (en) * 1984-01-05 1987-02-04 Drummond Scientific Company Disposable capillary tube device
US6814936B1 (en) 1999-07-01 2004-11-09 Goran Enhorning Pipette assembly having a small volume disposable tip

Also Published As

Publication number Publication date
FR2319117B1 (en) 1981-07-24
IT1066366B (en) 1985-03-04
BE844304A (en) 1976-11-16
DE2633530A1 (en) 1977-02-03

Similar Documents

Publication Publication Date Title
ATE14994T1 (en) PRECISION PIPETTE WITH DISPLACEMENT EFFECT.
GB1364591A (en) Pipette apparatus
ATE18934T1 (en) DEVICE ON A CYLINDER USED WITH PRESSURE FLUID WITHOUT ROD.
GB1158159A (en) Cervical Canal Specimen Collector
Trevan The micrometer syringe
FR2446672B1 (en)
FR2319117A1 (en) Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube
US4464941A (en) Device for the contactless metering of liquids
ES291154Y (en) PROVISION FOR DETERMINING THE GLOBULAR SEDIMENTATION RATE OF THE BLOOD
GB811838A (en) Improvements in or relating to burettes
EP0032719A3 (en) Microsyringe
SU489012A1 (en) Device for measuring pressure pulsations
JPS54161967A (en) Production of flow velocity and flow rate measuring device
FR2442626A1 (en) Instrument for transferring paste into syringe - has plunger fitting in cylindrical socket with axial bore contg. piston
SU99247A1 (en) Instrument for determining the magnitude of the limiting tangential shear stress of peat mass
SU369407A1 (en) DEVICE FOR SAMPLING SAMPLES
SU406144A1 (en) Ipe
JPS54161968A (en) Production of flow velocity and flow rate measuring device
SU123321A1 (en) Gas flow measurement method
FR2290661A1 (en) Specific gravity and flow rate measurement for fluid - involves determining force to drive reciprocating tube filled with fluid
Davenport A simple anaerobic method of obtaining plasma
SU439710A1 (en) Device for determining the pressure between the flexible bodies of products
SU659182A1 (en) Liquid pipetting apparatus
GB563347A (en) Improvements in liquid measuring pipettes
FR2360293A1 (en) Tooth root passage seal injection system - uses plunger in cylindrical body delivering sealing material via capillary tube

Legal Events

Date Code Title Description
ST Notification of lapse