Microdialysis tubing connectors

These silicone tubing segments are sized to connect FEP tubing to 22ga swivels, probes and syringes with no added dead volume. They offer two advantages over traditional "blue widgets": first, they do not need to be soaked in alcohol prior to installation; and second they minimize the chance of damage to swivels when removing tubing, as blue widgets have an extremely tight grip after they shrink down.