Cadwell Patient Paks give you the number of disposable electrodes you need to complete most single-patient studies - 4 bars (can be separated into 8 tabs) 2 each of rings and ground electrodes.
Starter kit includes one set of mini-crocodile clips (76cm/30") with red and black twisted and green, and one (46cm/18") shielded cable, along with 25 patient packs.
Refill kit contain 25 patient packs (no crocodile clips).
Electrodes are single patient use only.