Abstract: A continuous tube having alternating compositions along a length direction of the tube can include at least a first segment extruded from a first composition along a length direction of the tube and at least a second segment extruded from a second composition along the length direction of the tube in which the first and second segments are integrally joined. Additional segments can be added to the continuous tubing. Such tubing can be used as medical device such as with infusion sets.

Abstract: A continuous tube having alternating compositions along a length direction of the tube can include at least a first segment extruded from a first composition along a length direction of the tube and at least a second segment extruded from a second composition along the length direction of the tube in which the first and second segments are integrally joined. Additional segments can be added to the continuous tubing. Such tubing can be used as medical device such as with infusion sets.

Abstract: A continuous tube having alternating compositions along a length direction of the tube can include at least a first segment extruded from a first composition along a length direction of the tube and at least a second segment extruded from a second composition along the length direction of the tube in which the first and second segments are integrally joined. Additional segments can be added to the continuous tubing. Such tubing can be used as medical device such as with infusion sets.

Abstract: A non-fouling liquid level detector and control especially for a sealed system likely to have iron particle contaminants. The device employs a float projecting above the liquid level and bearing above the liquid level a unmagnetized ferromagnetic tell-tale. A magnetic field is generated by a magnet positioned outside the sealed system. The magnetic field extends around the float and tell-tale through a magnetically permeable partition comprising a wall of the sealed system that is positioned between the magnet and the float. The float position is monitored by a magnetic field sensor such as a Hall Effect device positioned adjacent the magnet, outside the sealed system. The sensor responds to the movement of the tell-tale. The output of the sensor is employed to control the monitored liquid level.