| abstract |
The present invention provides a method for efficiently and uniformly treating articlesnwith two or more fluids without transferring the articles from one container to anotherncontainer. The method comprises: providing the fluids, one at a time, to treat the articles (10) in antreatment system, wherein the treatment system comprises one or more trays (20) each of whichnhas one or more baskets, each basket capable of holding one article (10), and wherein said trays (20)nare stacked to form a vessel or are stacked and placed within a preformed vessel (140), said vesselnor preformed vessel comprising a first entrance/exit (45,145) and a second entrance/exit (55,155)for the fluids;nand each time one of the fluids is provided to treat the articles, (a) flushing continuously thenarticles with the fluid in a first flow direction from the first entrance/exit to the secondnentrance/exit, (b) reversing the flow direction of the fluid, (c) flushing continuously the articlesnwith the fluid in a second direction from the second entrance/exit to the first entrance/exit for ansecond period of time, and (d) if necessary, repeating steps (a) to (c) for a desired number ofntimes. |