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EP0904840A3 - Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates - Google Patents

Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates Download PDF

Info

Publication number
EP0904840A3
EP0904840A3 EP98307455A EP98307455A EP0904840A3 EP 0904840 A3 EP0904840 A3 EP 0904840A3 EP 98307455 A EP98307455 A EP 98307455A EP 98307455 A EP98307455 A EP 98307455A EP 0904840 A3 EP0904840 A3 EP 0904840A3
Authority
EP
European Patent Office
Prior art keywords
liquids
pipet
flow rate
air flow
flow rates
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.)
Withdrawn
Application number
EP98307455A
Other languages
German (de)
French (fr)
Other versions
EP0904840A2 (en
Inventor
Timothy Paul Steele
James William Kenney
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.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
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 Becton Dickinson and Co filed Critical Becton Dickinson and Co
Publication of EP0904840A2 publication Critical patent/EP0904840A2/en
Publication of EP0904840A3 publication Critical patent/EP0904840A3/en
Withdrawn legal-status Critical Current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
    • 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
    • B01L3/0213—Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps

Landscapes

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

Abstract

A pipet gun for drawing liquids into and dispensing liquids from a pipet which includes a variable flow valve assembly. The valve assembly includes a valve which is capable of accommodating a plurality of flow rates, and which is progressively adjustable during pipetting between a first air flow rate and a second air flow rate which is in excess of the first flow rate and which is non-progressively adjustable during pipetting to a third air flow rate which is substantially greater than the second air flow rate. The valve assembly further includes a threshold detector in the form of a spring detent, which provides an indication to the operator that the pipet gun is operating at the increased fluid rate, i.e., the "express mode" of operation.
EP98307455A 1997-09-30 1998-09-15 Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates Withdrawn EP0904840A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6048597P 1997-09-30 1997-09-30
US60485P 1997-09-30

Publications (2)

Publication Number Publication Date
EP0904840A2 EP0904840A2 (en) 1999-03-31
EP0904840A3 true EP0904840A3 (en) 2000-01-19

Family

ID=22029782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98307455A Withdrawn EP0904840A3 (en) 1997-09-30 1998-09-15 Apparatus for drawing liquids into and expelling liquids from a pipet at variable flow rates

Country Status (2)

Country Link
EP (1) EP0904840A3 (en)
JP (1) JPH11165080A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136790A1 (en) * 2001-07-27 2003-02-13 Eppendorf Ag Method for dosing liquids and device for carrying out the method
FR2917648B1 (en) * 2007-06-25 2009-09-25 Gilson Sas Soc Par Actions Sim PIPETTE FOR COLLECTING FLUID BY MOVING THE PISTON.
CN101559390B (en) * 2009-05-14 2011-08-10 上海科华实验系统有限公司 Multi-suction spindle liquidrelief device capable of adjusting position of suction spindle
EP2633914B2 (en) * 2012-03-02 2020-04-08 Eppendorf AG Pipetting device and method for its production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719087A (en) * 1966-04-08 1973-03-06 R Thiers Pipetting apparatus and method
US3963061A (en) * 1975-09-16 1976-06-15 Drummond Scientific Company Apparatus for drawing liquids into, and expelling liquids from a pipette
US5294405A (en) * 1992-04-09 1994-03-15 Drummond Scientific Company Adjustable valve for pipette gun

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3719087A (en) * 1966-04-08 1973-03-06 R Thiers Pipetting apparatus and method
US3963061A (en) * 1975-09-16 1976-06-15 Drummond Scientific Company Apparatus for drawing liquids into, and expelling liquids from a pipette
US5294405A (en) * 1992-04-09 1994-03-15 Drummond Scientific Company Adjustable valve for pipette gun

Also Published As

Publication number Publication date
EP0904840A2 (en) 1999-03-31
JPH11165080A (en) 1999-06-22

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