Our electrode holders have been rigorously tested and used extensively for successful low noise, whole-cell and single-channel recording. All our holders have gold plated pins.

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


DB Range of microelectrode holders
Microelectrode holders - DB Range
Our original range of microelectrode holders, now superceded by our ISO range. We manufacture DB holders for users who require continuity in their experiments. They are 5mm shorter than the ISO range. The range comes with 3 types of fitting; S - Screw fitting for Axon HLU type headstages, P - Push fit for Axon HL-1 type headstages and H - BNC connector type for HEKA Co. headstages and some NPI and Dagan amlifiers.
ISO Range of microelectrode holders
Microelectrode holders - ISO Range
Over 2 years in development, and in use in many of the best electrophysiology laboratories in the world since 2009, this design offers electrophysiologists a holder with the highest mechanical stability and low noise. It offers major improvements over the original DB range that virtually eliminate pipette movement and air leakage. A longer barrel allows for the insertion of a small polycarbonate cylinder between the two O-rings which keeps everything rigid. The cylinder is precision milled at both ends to hold the O-rings in place.
Microelectrode spares
O-rings, wire seals, replacement gold-plated pins and BNC adapter for all our current ranges of holder.
Magnetic perfusion tube holders
Magnetic 'widgets' for holding perfusion lines, bath electrodes etc. on an electrophysiology rig.

Our Guarantee

Your electrode holder is covered by an international guarantee for a period of 24 months from the date of purchase against faults in materials and workmanship.

The affected part will be replaced free of charge, within this period, provided that the fault falls within the terms of this guarantee.

Should your microelectrode require attention or you are having a problem with it, please contact us at or telephone +44 (0)208 319 4996.

Damage and/or defects caused by fair wear and tear, accidents, use which is unreasonable or inconsistent with our instructions and repair by persons other than G23 Instruments are not covered by this guarantee. Wire seals, O-rings and contact pins, worn in the course of normal use, are also excluded.

Please note that your rights under the guarantee are subject to your compliance with G23 Instruments’ electrode holder instructions as set out above. Please read the instructions supplied with the holder carefully.
This guarantee is additional to your statutory rights.