Evolution of the G&J Electronics Barostat

Prototype 1991	Isobar3, first commercial model, 1992
Distender Series I, more compact design, 1993
	Distender Series II, 2 models available, simultaneous dual pressure, dual balloon capability,  lending to more complex distention protocols.
Human Barostat, Distender Series, Model II	Rat Barostat (mini), Distender Series, Model IIR

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