Large EEG Disposable Sensor Economy Pack (300 Sensors)

These large sensors are used primarily for mastoid or ear placement for the ground and/or reference EEG placements. They are pre-gelled but do require 10-20 conductive paste when placed in the hair. These silver-silver chloride sensors are 1-3/8" X 1-3/8". For single-channel placements where two ground reference sensors are needed, this pack will typically last for about 150 training sessions. For two-channel placements, which require a minimum of three ground reference sensors, this pack will last for about 100 training sessions. Please note that you will also need some small sensors for the active sensor placements used in any training exercises, but that you can substitute these large sensors for small sensors if necessary.