microelectrode holders

The Covid-19 pandemic - G23 Instruments are working normally and can supply items but we can no longer guarantee deliveries within 3 working days as some recipient institutions may not be open when the courier is to deliver due to Covid-19 lockdowns.

Deliveries to EU Countries - Please note that after the 1st January 2021 buyers from the EU will need to pay customs duties and VAT (at rates in their own country) for their orders to clear EU customs.

G23 Instruments manufacture precision engineered, minimal drift, low noise microelectrode holders for research groups around the world. The company works closely with active research staff within the Department of Neuroscience, Physiology & Pharmacology at University College London and other institutes and its novel equipment and designs have been thoroughly tested under rigorous research conditions.We market microelectrode holders for Axon Instruments headstages, all HEKA patch clamp amplifiers, Sutter Instrument amplifiers, most NPI electronic amplifiers and spares for our holders. Our electrode holders have been recommended for low drift long term recording and stability by both Axon (prior to their takeover by Molecular Devices) and Burleigh Instruments (Dec 2010: “Pipette drift sources and solutions for patch clamp recording experiments”). 

See Choosing a holder for advice on which holder to purchase.

Please see Ordering and Payment before placing an order.

The differences between our holders and those of other manufacturers are:

  • The design of our electrode holders greatly reduces the chance of movement of the pipette during patch clamp recording, which is undesirable but often occurs during changes in pipette pressure. It does this by supporting the electrode glass at two points.
  • Our holders are engineered for discrete sizes of pipette glass and we can ensure less drift during an experiment than those from other manufacturers whose holders can accommodate multiple sizes.
  • Our holders are made from low noise polycarbonate. Some other manufacturers use metallized components which add more electrical background noise during recording. Some use Teflon pipette (electrode) caps which, from our research experience, will 'creep' during long experiments and loosen the hold on the pipette, leading to increased drift. Our holders only use Teflon for the connection to the headstage, which has no effect on your experiments.
  • All our holders are precision machined rather than moulded.

As a small specialist company, G23 Instruments works with active researchers to continually develop its products and we are able to customise our microelectrode holders to suit particular requirements. Please contact us if you have a particular need.


Our clients include:

 University College London

Northwestern University

University of Cambridge

University of Bath

Howard Hughes Medical Institute

Imperial College London

University of Oxford

Allen Institute for Brain Science


University of Alabama in Birmingham

Institut Pasteur


Max Planck Institute

University of Zurich

University of Bristol

UKRI - Medical Research Council

University of Edinburgh

LMU Muenchen

University of Washington


Medizinische Universitat Wien

Georgia Institute of Technology

California Institute of Technology

National Institutes of Health