Abrasive Skin Preparation Pads (10/pack)
Abrasive Skin Preparation Pads (10/pack) remove non-conductive skin cells and ensure optimal contact during the acquisition of biosignals. Pad size is 25mm x 25mm, 10mm height. Rub the abrasive pad gently across the subject's skin before applying any gel or electrode.
These abrasive skin preparation pads (ELPAD) from BIOPAC Systems, Inc. are used for prepping locations prior to biopotential measurements. They remove non-conductive ("dead") skin cells which results in optimal contact (low impedances) between the measurement electrode and the subject's skin.
The size of an abrasive skin preparation pad is 25mm x 25mm and the height is 10mm. One pack contains 10 abrasive skin preparation pads.
Application Note
Take an abrasive skin preparation pad and gently rub the location where the electrode is to be placed. This removes a thin layer of dead skin cells from the surface of the skin. Since dead skin doesn’t conduct electricity well, removing it improves the connection between the electrode and the skin.
Note for EDA/GSR applications: These abrasive skin preparation pads are not suitable for electrodermal activity (EDA) / skin conductance (GSR) applications. The conductivity of the skin at the electrode site is the variable to be measured so no steps should be taken to artificially modify that conductance.