Beckman Coulter, Inc.

Jon P Lindquist

Dang Minh Ngo

Alan N Johnson

Armer J Willenbring

Kinh N Vo

Paul R Meyer

Rodney E Haning

The present invention concerns an improved apparatus for cleaning the interior of a liquid handling probe to reduce the amount time and the volume of wash fluid required to clean the probe and minimize carryover of material between different samples. In addition to the probe, the apparatus includes one or more wash fluid reservoirs, a compressed gas supply, one or more pumps, two or more valve-controlled probe lines and a controller for opening and closing the valves and actuating the pump(s) at desired time intervals. The invention further concerns a method of cleaning a liquid handling probe using the claimed apparatus and comprising sequential steps of pumping wash fluid and compressed gas through the probe.

Apparatus and method for cleaning a liquid handling probe

An apparatus for feeding to an automated analyzer a bulk quantity of vessels is provided. The bulk vessel feeding apparatus has a frame structure, a vessel hopper and an elevator chain supported by the frame structure. The elevator chain is driven by a drive sprocket and carries a plurality of scoopers for transporting the vessels from the hopper to a sorting and orienting mechanism. The sorting and orienting mechanism has two actuated rams for ejecting the vessels from the scoopers into a guide, while sorting and orienting the vessels, such that they are all headed by their closed ends when traveling in the guide. The guide leads to an escape mechanism for dispensing the vessels one at a time to the analyzer.

Bulk vessel feeder

Growing community of inventors

Coon Rapids, MN, United States of America

Jon P Lindquist