GB2021971A - Pipetting apparatus - Google Patents

Pipetting apparatus

Info

Publication number
GB2021971A
GB2021971A GB7917238A GB7917238A GB2021971A GB 2021971 A GB2021971 A GB 2021971A GB 7917238 A GB7917238 A GB 7917238A GB 7917238 A GB7917238 A GB 7917238A GB 2021971 A GB2021971 A GB 2021971A
Authority
GB
United Kingdom
Prior art keywords
barrel
plunger
interior
parts
piston
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
GB7917238A
Other versions
GB2021971B (en
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.)
Hearse D J
Original Assignee
Hearse D J
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 Hearse D J filed Critical Hearse D J
Priority to GB7917238A priority Critical patent/GB2021971B/en
Publication of GB2021971A publication Critical patent/GB2021971A/en
Application granted granted Critical
Publication of GB2021971B publication Critical patent/GB2021971B/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
    • B01L3/021—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
    • B01L3/0224—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type having mechanical means to set stroke length, e.g. movable stops

Landscapes

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

Abstract

A pipettor comprises a manually- operable plunger formed of two parts 4, 10 connected by a joint 11 and mounted for sliding movement within a barrel 1, the plunger having an extension of smaller diameter constituting a piston 15 co-operating with a cylinder 17 which forms an extension of the barrel and is sealed from the remainder of the interior of the barrel by a seal 16 surrounding the piston 15. Movement of the plunger is controlled by a spring 5 and is limited by co-operation between stops 8, 12 on the plunger and corresponding stop 20 in the interior of the barrel 1. The barrel comprises two axially spaced parts which are permanently secured together over a common surface 26, 28 which intersects the interior surface of the barrel at a region such as to permit insertion of the plunger into the barrel prior to the securing together of the two parts of the barrel. The pipette is made of plastics material and is disposable when contaminated. <IMAGE>
GB7917238A 1978-05-25 1979-05-17 Piperting apparatus Expired GB2021971B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7917238A GB2021971B (en) 1978-05-25 1979-05-17 Piperting apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2254778 1978-05-25
GB7917238A GB2021971B (en) 1978-05-25 1979-05-17 Piperting apparatus

Publications (2)

Publication Number Publication Date
GB2021971A true GB2021971A (en) 1979-12-12
GB2021971B GB2021971B (en) 1982-11-03

Family

ID=26255984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917238A Expired GB2021971B (en) 1978-05-25 1979-05-17 Piperting apparatus

Country Status (1)

Country Link
GB (1) GB2021971B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464941A (en) * 1982-04-02 1984-08-14 Espe Fabrik Pharmazeutischer Praeparate Gmbh Device for the contactless metering of liquids
US4784834A (en) * 1985-12-12 1988-11-15 Glasgeratebau Hirschmann Pipette
US5726363A (en) * 1995-11-02 1998-03-10 Kalidindi; Sanyasi R. Liquid sampler
EP1412088A2 (en) * 2001-06-29 2004-04-28 David T. Bach Precision fluid dispensing system
US7114913B2 (en) 2001-12-07 2006-10-03 Compair Lubricant-cooled gas compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464941A (en) * 1982-04-02 1984-08-14 Espe Fabrik Pharmazeutischer Praeparate Gmbh Device for the contactless metering of liquids
US4784834A (en) * 1985-12-12 1988-11-15 Glasgeratebau Hirschmann Pipette
US5726363A (en) * 1995-11-02 1998-03-10 Kalidindi; Sanyasi R. Liquid sampler
EP1412088A2 (en) * 2001-06-29 2004-04-28 David T. Bach Precision fluid dispensing system
EP1412088A4 (en) * 2001-06-29 2004-06-30 David T Bach Precision fluid dispensing system
US7114913B2 (en) 2001-12-07 2006-10-03 Compair Lubricant-cooled gas compressor

Also Published As

Publication number Publication date
GB2021971B (en) 1982-11-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee