Mounts, Holders, & Clamps

Stable-tip Electrode Holder

Amplifier Electrode Holders

   The new ST50 Stable-tip electrode holders eliminate the final instability link in the electrophysiology experimental setup.  We've taken a thermally stable base material and coated it with alumina oxide.  This coating has two benefits:  first, it is non-conductive so the holder does not act as an electrical antenna; second, it is very resistant to corrosion.

   Under conditions of a high resistance electrode seal (gigaseal), the ST50 series electrode holder has a noise level of 0.79-0.80 pA RMS (5kHz filter); polycarbonate measured 0.78-0.79 pA (reported using an Axopatch 200B in whole-cell mode).  The base material of the Stable-tip has a thermal expansion coefficient of 23um/m°C versus 70um/m°C of a polycarbonate holder.  That is an improvement by a factor of three.

   The Stable-tip electrode holders come with one (1) each of Ag-wires and wire seals.  The universal clamp design will accommodate a range of electrode glass from 1mm-2mm.

   The use of fire polished glass is strongly recommended.  The use of non-fire polished glass will wear out the seal prematurely.

When ordering, please specify the headstage amplifier to be used.