Electroencephalography (EEG) is an electrophysiological monitoring method to record electrical activity of the brain whereas Electrocardiograhy (ECG) records electrical pulses of the heart. The traces are recorded over graphs for analysing. Burdick presents exceptionally super high quality ECG/EKG recording chart papers. ECG sheets from Burdick contain high accurate red grids with white header.Specifications: SKU Number: 7868Grid Color: RedType: Z-FoldUnit: 10 PackSize: 8.50"x11" (200 Sheets)Works With: E500TW, ECLIPSE, LE-II, LEi-II,E350, E350I, 550, E600, E700, Quest, E350I, E550, E600, E700, QuestEquivalent To: Burdick 7966, E600, E350, E350I, E550, ESCRIBE, ECLIPSE LE, 7976