Elgiloy (a stainless cobalt-chromium alloy, similar to a stainless steel) is available in monopolar electrodes for specialty applications, such as vibrating probes for SVET. Elgiloy is most commonly used in dental implants and offers good biocompatibility and corrosion resistance.
Advantages
Disadvantages
Versatile metal that offers good recording performance in acute and chronic applications.
Contains a small percentage of iron, which allows electrode tracts to be visually identified using Prussian Blue staining techniques.
Inadequate for microstimulation due to poor charge transfer characteristics and electrochemical instability during stimulation.
May corrode and degrade in performance when implanted for long periods of time or subjected to certain stimulation protocols.
These monopolar microelectrodes of MicroProbes are also available in Tungsten, Platinum-Iridium, and Pure Iridium metal. As an alternative we provide them with a thin coat of vapor-deposited Parylene-C insulation instead of the Polymide tubing. Each electrode is etched to a fine taper and tipped using a proprietary process to a specific impedance value. Four different tip profiles are also available to further fine-tune your electrode selection to your particular application.
We offer a variety of different tip alternatives for those that prefer a specialized electrode profile for their research.
The tip selection can provide subtle yet important changes to the performance of the electrode, as described below. It is recommended that first time users consider experimenting with different tip profiles to determine which works best for their recording or stimulation protocols.
Monopolar Electrodes, Elgiloy (Stainless Steel), Blunted Tip (225 µm × 3") With Polymide Tubing
Item
Length
Shaft Diameter
Tip Diameter
Impedance
Applications
Pkg of 10
EL3PT30.01B10
76 mm
0.356 mm
3-5 µm
0.01 MΩ
MultiUnit & ERP recording & Stim
EL3PT30.05B10
76 mm
0.356 mm
0.05 MΩ
EL3PT30.1B10
76 mm
0.356 mm
0.1 MΩ
EL3PT30.5B10
76 mm
0.356 mm
0.5 MΩ
Single & multiunit rec. & stim.
EL3PT31.0B10
76 mm
0.356 mm
3-4 µm
1.0 MΩ
EL3PT31.5B10
76 mm
0.356 mm
1.5 MΩ
EL3PT32.0B10
76 mm
0.356 mm
2.0 MΩ
Greater selectivity & micro. stim.
EL3PT32.5B10
76 mm
0.356 mm
2.5 MΩ
Greater Selectivity - Small Cells
EL3PT33.0B10
76 mm
0.356 mm
3.0 MΩ
Common Tip Profiles:
A - STANDARD TIP PROFILE The standard tip profile features a sharp yet robust point that offers versatile performance and an effective balance between penetration and durability.B - BLUNTED TIP PROFILE The blunted electrodes are engineered to have a more rounded, bullet-shaped tip. For many applications the blunted tip can offer superior stimulation performance.H - HEAT TREATED TAPERED TIP PROFILE The heat-treated electrodes are intended for those investigators who must penetrate their probes through tough membranes, such as the dura mater of larger mammals.F - EXTRA FINE TIP PROFILE The extra-fine tip profile features a significantly sharper taper as well as a thinner insulation layer. Available in Tungsten only!
