The TCS Swivel series are a durable high quality swivel with low internal volume. This is a two channel liquid swivel designed specifically for microdialysis. The lumen of the swivel is constructed from biologically inert (TFE) pipe with I.D. 29G. The dead volume of the swivels channels (A & B in the illustration) are 1,5 μl and 4,5 μl.