DE3064407D1 - Method of residue-free dispensing of small amounts of liquid - Google Patents

Method of residue-free dispensing of small amounts of liquid

Info

Publication number
DE3064407D1
DE3064407D1 DE8080104407T DE3064407T DE3064407D1 DE 3064407 D1 DE3064407 D1 DE 3064407D1 DE 8080104407 T DE8080104407 T DE 8080104407T DE 3064407 T DE3064407 T DE 3064407T DE 3064407 D1 DE3064407 D1 DE 3064407D1
Authority
DE
Germany
Prior art keywords
liquid
cylinder
piston
residue
dead centre
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
Application number
DE8080104407T
Other languages
German (de)
Inventor
Bernd Dr Zierenberg
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.)
CH Boehringer Sohn AG and Co KG
Original Assignee
CH Boehringer Sohn AG and Co KG
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 CH Boehringer Sohn AG and Co KG filed Critical CH Boehringer Sohn AG and Co KG
Priority to DE8080104407T priority Critical patent/DE3064407D1/en
Application granted granted Critical
Publication of DE3064407D1 publication Critical patent/DE3064407D1/en
Expired 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
    • B01L3/0203—Burettes, i.e. for withdrawing and redistributing liquids through different conduits
    • B01L3/0206—Burettes, i.e. for withdrawing and redistributing liquids through different conduits of the plunger pump type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
    • F04B7/0015—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having a slidable movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Reciprocating Pumps (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Measuring Volume Flow (AREA)
  • Steroid Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Saccharide Compounds (AREA)
  • Indole Compounds (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

1. Process for metering small quantities of liquid without leaving a residue by means of a micro-piston pump having a capillary cylinder in which a piston, which fits in gastight manner therein, is mounted so as to be movable between a top dead centre and a bottom dead centre, the cylinder at its end located opposite the base of the piston opening into a twoway valve which connects the space in the cylinder alternately to an inlet and to an outlet (which connects the cylinder to the atmosphere during the first stage of the intake operation), characterised in that the piston and the valve are moved in such a way that, during the intake operation, first a defined quantity of air and then a defined quantity of liquid is transported into the cylinder, the quantity of air being such that, as the piston moves downwards to bottom dead centre, all the liquid is expelled through the outlet line.
DE8080104407T 1979-08-20 1980-07-26 Method of residue-free dispensing of small amounts of liquid Expired DE3064407D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080104407T DE3064407D1 (en) 1979-08-20 1980-07-26 Method of residue-free dispensing of small amounts of liquid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792933617 DE2933617A1 (en) 1979-08-20 1979-08-20 MICRO PISTON PUMP
DE8080104407T DE3064407D1 (en) 1979-08-20 1980-07-26 Method of residue-free dispensing of small amounts of liquid

Publications (1)

Publication Number Publication Date
DE3064407D1 true DE3064407D1 (en) 1983-09-01

Family

ID=6078839

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19792933617 Withdrawn DE2933617A1 (en) 1979-08-20 1979-08-20 MICRO PISTON PUMP
DE8080104407T Expired DE3064407D1 (en) 1979-08-20 1980-07-26 Method of residue-free dispensing of small amounts of liquid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19792933617 Withdrawn DE2933617A1 (en) 1979-08-20 1979-08-20 MICRO PISTON PUMP

Country Status (14)

Country Link
EP (1) EP0024313B1 (en)
JP (1) JPS5632082A (en)
AT (1) ATE4290T1 (en)
AU (1) AU544213B2 (en)
CA (1) CA1152379A (en)
DE (2) DE2933617A1 (en)
DK (1) DK147844C (en)
ES (1) ES494358A0 (en)
FI (1) FI67434C (en)
IE (1) IE50187B1 (en)
IL (1) IL60854A0 (en)
NO (1) NO155358C (en)
NZ (1) NZ194707A (en)
ZA (1) ZA805103B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520755B1 (en) * 2000-10-10 2003-02-18 Beckman Coulter, Inc. Fluid-moving device with integrated valve
CN109573124A (en) * 2018-12-29 2019-04-05 河南官渡生物工程有限公司 The plunger pump of adjustable filling amount for veterinary drug production

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE125606C (en) *
DE254111C (en) *
GB1109492A (en) * 1964-04-29 1968-04-10 Snam Spa Improvements in or relating to hydraulic reciprocating pumps
JPS4935904A (en) * 1972-08-09 1974-04-03
FR2319117A1 (en) * 1975-07-25 1977-02-18 Pasteur Institut Syringe for use with small quantities of liquid - measures quantity by displacement of calibrated wire inside a capillary tube
US4022065A (en) * 1976-02-19 1977-05-10 Ramin James A Calibrated sample delivery apparatus accommodating offset error
US4061037A (en) * 1976-09-20 1977-12-06 Keegan William P Pipettes
US4091677A (en) * 1976-12-23 1978-05-30 Nichiryo Co., Ltd. Pipetting apparatus
JPS541422A (en) * 1977-06-06 1979-01-08 Citizen Watch Co Ltd Fixed quantity of liquid supplying device

Also Published As

Publication number Publication date
NO155358C (en) 1987-03-18
CA1152379A (en) 1983-08-23
IL60854A0 (en) 1980-10-26
NO802439L (en) 1981-02-23
ES8105829A1 (en) 1981-06-16
DK356980A (en) 1981-02-21
EP0024313B1 (en) 1983-07-27
ZA805103B (en) 1982-04-28
FI67434C (en) 1985-03-11
NZ194707A (en) 1984-11-09
IE50187B1 (en) 1986-03-05
AU544213B2 (en) 1985-05-23
ES494358A0 (en) 1981-06-16
DK147844C (en) 1985-06-03
IE801752L (en) 1981-02-20
ATE4290T1 (en) 1983-08-15
NO155358B (en) 1986-12-08
FI67434B (en) 1984-11-30
AU6156880A (en) 1981-04-09
DE2933617A1 (en) 1981-03-26
JPS5632082A (en) 1981-04-01
DK147844B (en) 1984-12-24
FI802588A (en) 1981-02-21
EP0024313A1 (en) 1981-03-04

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee