GB2327628A - Powder pipette with replaceable tip - Google Patents

Powder pipette with replaceable tip Download PDF

Info

Publication number
GB2327628A
GB2327628A GB9715713A GB9715713A GB2327628A GB 2327628 A GB2327628 A GB 2327628A GB 9715713 A GB9715713 A GB 9715713A GB 9715713 A GB9715713 A GB 9715713A GB 2327628 A GB2327628 A GB 2327628A
Authority
GB
United Kingdom
Prior art keywords
pipette
powder
filter
powder pipette
replaceable tip
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Withdrawn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
GB9715713A
Other versions
GB9715713D0 (en
Inventor
John Parkin
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.)
PEERLESS SYSTEMS Ltd
Original Assignee
PEERLESS SYSTEMS Ltd
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 PEERLESS SYSTEMS Ltd filed Critical PEERLESS SYSTEMS Ltd
Priority to GB9715713A priority Critical patent/GB2327628A/en
Publication of GB9715713D0 publication Critical patent/GB9715713D0/en
Publication of GB2327628A publication Critical patent/GB2327628A/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Withdrawn legal-status Critical Current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
    • B01L3/0213—Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
    • 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
    • B01L3/0275—Interchangeable or disposable dispensing tips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
    • B01L2200/0657—Pipetting powder

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

An automatic hand-held pipette for sampling and transferring powder has a vacuum unit 2,3 with a replaceable tip 14. A filter 10, which may be fixed or movable, prevents the powder being drawn into the vacuum unit and defines the upper boundary of the working volume 7 of the pipette. In another embodiment (Fig 3) the pipette body is connected to a remote vacuum source for use in a fully automated robotic system.

Description

(PANEL A) Automatic Powder Pipettes This invention relates to an automatic powder pipette.
The term 'pipette' normally describes a device for the transfer of liquids. It has been adopted, in this instance, to describe a device which can be used to transfer powder in a similar manner, by withdrawing it into a tube and releasing it as required.
The present invention describes three types of powder pipette, all of which operate on the same principle. Each relies on the powder being drawn into the pipette under vacuum, and expelled under positive pressure as required. Replaceable filters prevent powder from entering the vacuum generating unit.
Two of the pipettes described (Figs 1 and 2), are for hand-held use, while the third (Fig 3) is designed for use in automated systems.
Specific embodiments of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows, in cross section, a fixed volume powder pipette for use with disposable tips.
Figure 2 shows, in cross section, a variable volume powder pipette.
Figure 3 shows, in cross section, a fixed volume powder pipette for use in automated systems.
PANEL B lland-held powder Dinettes Referring to the drawings (Figs 1 and 2), the powder pipette comprises a hand-held unit, 1, incorporating a rotary vane vacuum pump, 2, driven by a 12 v DC motor, 3. A three position switch, 4, allows the motor to be switched in forward or reverse directions to supply negative or positive pressures in the vacuum line, 5. A supplementary filter, 6, protects the pump from the ingress of particulate matter.
The fixed volume pipette, illustrated in Figure 1, employs a disposable tip,8, which has an integral filter, 9. The volume of sample withdrawn (area 7), depends upon the size of tip, 8, which is employed.
The variable volume pipette, illustrated in Fig.2, allows the sample volume (area 7) to be varied by raising or lowering the position of filter 10. A thumb screw adjuster, 11, allows the height of the filter support rod, 13, to be varied. A digital indicator, 12, shows the position of the filter support rod, 13. The barrel, 14, of the pipette can be unscrewed for cleaning or replacement of the filter, 10.
Powder piDette for use in automated svstems Referring to the drawing (Fig. 3), the pipette body, 1, is designed to affix to the z axis of an x,y,z, robot. Replacement tips, 2, screw attach to the pipette body to allow the sample volume (area 3) to be varied. A replaceable filter, 4, protects the vacuum pump from the ingress of particulate matter.
Negative and positive air pressures are generated by a vacuum pump, 5, with directional flows controlled by valves,6. A flow controller, 7, allows the positive pressure to be regulated.

Claims (5)

PANEL C CLAIMS.
1. A hand-held powder pipette, with in-built vacuum generator for use with disposable tips.
2. A disposable tip, with integral filter, for use with the powder pipette in Claim 1.
3. A variable volume powder pipette, with in-built vacuum generator as in Claim 1, with adjustably positioned filter in the sampling barrel.
4. A powder pipette for use in automated systems, with replaceable tips for volume slection, and remote controls.
5. Powder pipettes, substantially as described herein, with reference to Figures 1-3 of the accompanying drawing.
GB9715713A 1997-07-26 1997-07-26 Powder pipette with replaceable tip Withdrawn GB2327628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9715713A GB2327628A (en) 1997-07-26 1997-07-26 Powder pipette with replaceable tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9715713A GB2327628A (en) 1997-07-26 1997-07-26 Powder pipette with replaceable tip

Publications (2)

Publication Number Publication Date
GB9715713D0 GB9715713D0 (en) 1997-10-01
GB2327628A true GB2327628A (en) 1999-02-03

Family

ID=10816440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9715713A Withdrawn GB2327628A (en) 1997-07-26 1997-07-26 Powder pipette with replaceable tip

Country Status (1)

Country Link
GB (1) GB2327628A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004024329A1 (en) * 2002-09-13 2004-03-25 Exelixis, Inc. Apparatus for pipetting powder
WO2004030819A2 (en) * 2002-10-04 2004-04-15 Hte Aktiengesellschaft The High Throughput Experimentation Company Laboratory workstation for providing samples
EP1482286A1 (en) * 2003-05-26 2004-12-01 Metrohm Ag Apparatus for automatically transferring and dosing a pourable product, especially powder
WO2010008387A1 (en) * 2008-07-16 2010-01-21 Biodot, Inc. Handheld powder handling devices and related methods
JP2018158293A (en) * 2017-03-23 2018-10-11 株式会社イントロテック Pipette for powder, pipette device for powder and method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1414487A (en) * 1972-07-04 1975-11-19 Betts P A Method of obtaining a column of liquid within an open-ended tube and a tube device for carrying out the method
GB1463807A (en) * 1973-03-01 1977-02-09 Wellcome Found Filters
GB1477605A (en) * 1974-01-29 1977-06-22 Loing Verreries Sampling of fluids
US4299258A (en) * 1979-07-02 1981-11-10 Brite Alan D Method of insecticide application
EP0152120A2 (en) * 1984-02-16 1985-08-21 Rainin Instruments Co., Inc. Hand-held, self-contained, automated pipette for pipetting and/or titrating liquids
EP0155087A2 (en) * 1984-03-12 1985-09-18 Baxter Travenol Laboratories, Inc. Hand-held pipette with disposable capillary
EP0264704A2 (en) * 1986-10-20 1988-04-27 Eppendorf Gerätebau Netheler + Hinz GmbH Pipetting device provided with a conical adapter for a pipette tip, and pipette tip for such a device
US5156811A (en) * 1990-11-07 1992-10-20 Continental Laboratory Products, Inc. Pipette device
US5364595A (en) * 1993-07-02 1994-11-15 Porex Technologies Corp. Pipette device constructed to prevent contamination by aerosols or overpipetting

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1414487A (en) * 1972-07-04 1975-11-19 Betts P A Method of obtaining a column of liquid within an open-ended tube and a tube device for carrying out the method
GB1463807A (en) * 1973-03-01 1977-02-09 Wellcome Found Filters
GB1477605A (en) * 1974-01-29 1977-06-22 Loing Verreries Sampling of fluids
US4299258A (en) * 1979-07-02 1981-11-10 Brite Alan D Method of insecticide application
EP0152120A2 (en) * 1984-02-16 1985-08-21 Rainin Instruments Co., Inc. Hand-held, self-contained, automated pipette for pipetting and/or titrating liquids
EP0155087A2 (en) * 1984-03-12 1985-09-18 Baxter Travenol Laboratories, Inc. Hand-held pipette with disposable capillary
EP0264704A2 (en) * 1986-10-20 1988-04-27 Eppendorf Gerätebau Netheler + Hinz GmbH Pipetting device provided with a conical adapter for a pipette tip, and pipette tip for such a device
US5156811A (en) * 1990-11-07 1992-10-20 Continental Laboratory Products, Inc. Pipette device
US5364595A (en) * 1993-07-02 1994-11-15 Porex Technologies Corp. Pipette device constructed to prevent contamination by aerosols or overpipetting

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004024329A1 (en) * 2002-09-13 2004-03-25 Exelixis, Inc. Apparatus for pipetting powder
WO2004030819A2 (en) * 2002-10-04 2004-04-15 Hte Aktiengesellschaft The High Throughput Experimentation Company Laboratory workstation for providing samples
WO2004030819A3 (en) * 2002-10-04 2004-10-14 Hte Ag The High Throughput Exp Laboratory workstation for providing samples
EP1482286A1 (en) * 2003-05-26 2004-12-01 Metrohm Ag Apparatus for automatically transferring and dosing a pourable product, especially powder
WO2010008387A1 (en) * 2008-07-16 2010-01-21 Biodot, Inc. Handheld powder handling devices and related methods
JP2018158293A (en) * 2017-03-23 2018-10-11 株式会社イントロテック Pipette for powder, pipette device for powder and method

Also Published As

Publication number Publication date
GB9715713D0 (en) 1997-10-01

Similar Documents

Publication Publication Date Title
US4527437A (en) Pipette controller
CN1128995C (en) Multiple channel pipetting device
US5302123A (en) Dental handpiece lubrication purging apparatus
CA2530188A1 (en) Low-noise vacuum release suction device and controllable aspirator using same
EP1571519A3 (en) Control device for providing a variable control signal to a fluid-supplying machine
JP4332575B2 (en) Pipette core, pipette, pipette device
EP0294185A3 (en) Filtering device
GB2327628A (en) Powder pipette with replaceable tip
US3988134A (en) Dental office system
JP2008512224A (en) Electronic pipette weighing device for aspirating and supplying a constant volume
EP0982073A2 (en) Suction device for dispensing liquids
JP4391995B2 (en) Pipette device for disposable tips with different dimensions
EP1524035B1 (en) Method for attaching a replaceable part to a pipetting device and an apparatus for such method
CN208109492U (en) A kind of portable continuous waste suction liquid device
CN110898869B (en) Holding device for holding a pipetting container on a pipetting device
AU685436B2 (en) Vacuum compensation valve
DE10322797B4 (en) Laboratory pump unit
US20190240652A1 (en) Metering device and method for operating the metering device
US6610208B1 (en) Device for reducing loss of liquid during fraction collection
CN215541007U (en) Pen-holding type liquid-transfering gun
CN208340751U (en) Aspirator
CA2013019A1 (en) Fluid flow control apparatus
CN214713624U (en) Suction device head
EP0480604A1 (en) Suction devices
US4892995A (en) Electric portable desoldering iron

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)