Abstract: A device and method of continuous introduction of liquid solution samples into a system from a chamber containing the solution.

Abstract: A vertical rotation shaft assembly for a swing-arm type door having a door plane and a cylinder for actuating the door includes an upper rotational shaft extended from the cylinder as a piston rod and a lower rotational shaft inserted into an edge of the door plane, the lower rotational shaft being coaxially arranged with the upper rotational shaft.

Abstract: This shaft mounting assembly includes a fixed support providing a pair of spaced, downwardly depending support members having inwardly extending, axially aligned pins attached thereto. The assembly also includes a bearing member, receiving the shaft in rotational relation and providing a pair of upwardly extending sidewalls having vertical open-ended slots receiving the pins; and a retainer member providing a pair of upwardly extending sidewalls having horizontal open-ended slots receiving the pins. The retainer member sidewalls are received between the support members and the bearing member sidewalls and the retainers acts to latch the bearing member to the fixed support and to provide a seat supporting the bearing member and the shaft against downward movement.