email: info@sdr.com.au Sydney, Australia Tel: +61-2-9882-2882

Electrodes & Wire

On this page: Microelectrode Holders
Ag-AgCl Reference Electrodes
On the next page: Metal Wires
Metal Rods
Metal Microelectrodes
Miniature Connectors

 

Microelectrode Holders

Precision-made electrode holders from Warner Instruments. For most models, the following variations are available:

Connector
  • 2mm pin
  • 2mm jack socket
  • BNC (male, friction fitting to socket)
Electrode
  • Silver wire - replaceable wire; allows minimal fluid in pipette
  • Ag-AgCl Pellet - replaceable sintered pellet giving stability & low impedance
Port
  • Side or end ports allow application of pressure or suction
  • Perfusion ports (some models) allow insertion of fine tubing into the pipette near its tip

 

EH Holder, straight, 2 mm pin, no port
 
EH Holder, right-angle, 2 mm socket, with port

EH Series Holders

Holders constructed from acrylic (6.3 mm diameter), and suitable for most intracellular and extracellular recording. Available with pellet or wire; the wire is easily replaceable without soldering and the pipette seals are also replaceable.

Variations available:

  • Silver wire (.25 mm x 50 mm) or Ag-AgCl pellet
  • Straight, 90º and 45º styles
  • Available with or without side port (2mm OD)
  • Connector: 2 mm pin or 2mm jack socket
  • Available for glass OD (dimension "A") of 1.0, 1.2, 1.5, or 2.0 mm
Microinjection holder, Luer port

MP Series Holders

Designed for applications such as microinjection with pressure/suction on the pipette. Acrylic body and stainless steel handle (4.8 mm x 80 mm).

  • Available with female Luer or threaded 1/4-28 side port
  • Silver wire & 2 mm pin optional (on threaded port models only)
  • Available for glass OD (dimension "A") of 1.0, 1.2, 1.5, or 2.0 mm
Patch clamp holder, 45 degree, 2 mm socket, 2 mm port

Q Series Patch Clamp Holders

Patch Clamp Holders are made from polycarbonate for lower electrical noise. Available with pellet or wire; the wire is easily replaceable without soldering and the pipette seals are also replaceable.

Variations available:

  • Silver wire (.25 mm x 50 mm) or Ag-AgCl pellet
  • Straight, 90º and 45º styles
  • Available with or without side port (2mm OD)
  • Available with or without extra perfusion port (straight & 90º models only)
  • Connector: 2mm jack socket or male BNC
  • Available for glass OD (dimension "A") of 1.0, 1.2, 1.5, or 2.0 mm
Axon EH-U Series Holder

Axon Instruments Series Holders

These polycarbonate holders are designed for use with Axon Instruments equipment. They are available in two styles: "A" series holders for AxoPatch and AxoClamp HL-1 and HL-2 headstages; and "EH-U" series holders for other Axon products.

  • "A" series are straight, with side port and optional perfusion port
  • "EH-U" series are available straight, 45º or 90º, with port and optional perfusion port (straight & 90º models only)
  • Available for glass OD (dimension "A") of 1.0, 1.2, 1.5, or 2.0 mm

Ag-AgCl Reference Electrodes

A range or pre-made silver/silver chloride electrodes suitable for custom skin or surface electrodes, bath electrodes, and the like. Made from very high purity materials, using a careful proprietary process to result in a fine grain, homogeneous mixture of silver and silver chloride. A careful sintering process strengthens and stabilizes the entire electrode assembly.

Typical values of the key parameters, measured in 0.9% saline, between pairs of electrodes the same size are:

Ag-AgCl Pellet & Disc Electrodes

Ag-AgCl Pellet & Disc Electrodes

Ideal for skin electrodes and other bioelectric recording. The sintered pellet has a pure silver wire embedded for soldering or twisting to other connections.

  • E200 - 1.5 mm dia x 3mm long
  • E201 - 2 mm dia x 4 mm long
  • E210 - 2 mm dia x 2 mm long
  • E202 - 4 mm dia x 1 mm thick
  • E203 - 8 mm dia x 1 mm thick
  • E204 - 12.5 mm dia x 1 mm thick

Ag-AgCl Pellet & Wire Electrodes

Two pellet electrodes embedded on a .25 x 70 mm silver wire, and a wire electrode in which the last 10 mm of the wire is uniformly coated with Ag-AgCl to a maximum diameter of 0.8 mm.

  • E205 - pellet 1 mm diameter on 70 mm x 0.25 mm wire
  • E206 - pellet 2 mm diameter on 70 mm x 0.25 mm wire
  • E255 - coating 0.8 mm diameter on 70 mm x 0.25 mm wire
Flat tip probes

Flat-tip Ag-AgCl probes

Sintered Ag-AgCl cylinders encased in a sturdy epoxy tube and fitted with a 2mm tinned copper wire. The flat end of the electrode can be resurfaced with fine abrasive. Ideal for use as a reference electrode in bath solutions.

  • E207 - tip 2 mm dia x 4 mm thick; tube 3.5 mm dia x 25 mm long
  • E208 - tip 2 mm dia x 4 mm thick; tube 5 mm dia x 50 mm long
Disc Electrodes

Disc Electrodes

Encapsulated disc electrodes leaving only the electrode surface and edge exposed - the 20 cm connection wire is protected. Ideal for skin electrodes.

  • E242 - disc electrode 4 mm diameter
  • E243 - disc electrode 8 mm diameter
  • E244 - disc electrode 12.5 mm diameter

We can also supply silver wire (see the next page) and a range of plugs, jacks, spare seals and pellets etc.

For more information and pricing details, please email us.


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