Platinum-Iridium Bipolar Electrodes, Standard Tip
Platinum-Iridium alloy is considered by many to be the “gold standard” for chronic recording and microstimulation due to its excellent electrochemical and mechanical characteristics.
Advantages | Disadvantages |
|
|
These bipolar microelectrodes of MicroProbes are also available in Tungsten and Elgiloy (an alloy similar to stainless steel). Each electrode is etched to a fine taper and tipped using a proprietary process to a specific impedance value. We offer a variety of different tip alternatives for those that prefer a specialized electrode profile for their research. There are four different tip profiles are also available to further fine-tune your electrode selection to your particular application. 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.
Stereotrodes are excellent for bipolar stimulation studies where the current injection needs to be confined to a small localized part of the neural tissue. They have also been used for enhanced isolation of single neural elements by simultaneous recordings of multiple units on two closely spaced microelectrodes. The tip spacing is typically equal to the diameter of the electrode shaft, however, they can be specified to greater separations in most instances.
As an alternative you may consider choosing monopolar electrodes with a thin Paryclene-C coating or with Polymide tubing for insulation, or concentric electrodes.
Stereotrodes (Bipolar Electrodes), Platinum-Iridium, Standard Tip
(75 µm × 2")
Item |
Length |
Outside Diameter |
Tip Separation |
Impedance |
Applications |
Pkg of 10 |
PI2ST30.1A3 |
51 mm |
0.216 mm |
75 µm |
0.1 MΩ |
Multi Unit record. & Stim. |
|
PI2ST30.5A3 |
51 mm |
0.216 mm |
75 µm |
0.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.0A3 |
51 mm |
0.216 mm |
75 µm |
1.0 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.5A3 |
51 mm |
0.216 mm |
75 µm |
1.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST32.0A3 |
51 mm |
0.216 mm |
75 µm |
2.0 MΩ |
Greater Selectivity & Micro. Stim. |
|
PI2ST33.0A3 |
51 mm |
0.216 mm |
75 µm |
3.0 MΩ |
Greater Selectivity & Micro. Stim. |
Stereotrodes (Bipolar Electrodes), Platinum-Iridium, Standard Tip
(125 µm × 2")
Item |
Length |
Outside Diameter |
Tip Separation |
Impedance |
Applications |
Pkg of 10 |
PI2ST30.1A5 |
51 mm |
0.356 mm |
125 µm |
0.1 MΩ |
Multi Unit record. & Stim. |
|
PI2ST30.5A5 |
51 mm |
0.356 mm |
125 µm |
0.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.0A5 |
51 mm |
0.356 mm |
125 µm |
1.0 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.5A5 |
51 mm |
0.356 mm |
125 µm |
1.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST32.0A5 |
51 mm |
0.356 mm |
125 µm |
2.0 MΩ |
Greater Selectivity & Micro. Stim. |
Stereotrodes (Bipolar Electrodes), Platinum-Iridium, Standard Tip
(225 µm × 2")
Item |
Length |
Outside Diameter |
Tip Separation |
Impedance |
Applications |
Pkg of 10 |
PI2ST30.1A10 |
51 mm |
0.560 mm |
225 µm |
0.1 MΩ |
Multi Unit record. & Stim. |
|
PI2ST30.5A10 |
51 mm |
0.560 mm |
225 µm |
0.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.0A10 |
51 mm |
0.560 mm |
225 µm |
1.0 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST31.5A10 |
51 mm |
0.560 mm |
225 µm |
1.5 MΩ |
Single & multiunit rec. & stim. |
|
PI2ST32.0A10 |
51 mm |
0.560 mm |
225 µm |
2.0 MΩ |
Greater Selectivity & Micro. Stim. |
Common Tip Profiles:
Also see:
Selecting the Optimum Electrode Configuration