公开(公告)号：US20230227338A1

公开(公告)日：2023-07-20

申请号：US18099412

申请日：2023-01-20

Applicant: Roche Diagnostics Operations, Inc.

Inventor： Kay Hagedorn ,  Dieter Heindl ,  Dirk Kessler ,  Hubert Paul ,  Martin Rempt ,  Hans Zahn

IPC: C02F1/66 ,  C02F1/52

CPC classification number: C02F1/66 ,  C02F1/52 ,  C02F2101/30

Abstract: The present invention relates to a method for treating a liquid sample comprising at least one diagnostic assay reagent after use. The present invention further relates to a tablet, a purified liquid sample, a diagnostic assay reagent, a waste water treatment system, a kit and uses thereof for treating the said liquid sample.

公开(公告)号：US20240409436A1

公开(公告)日：2024-12-12

申请号：US18810797

申请日：2024-08-21

Applicant: Roche Diagnostics Operations, Inc.

Inventor： Carlos Munoz ,  Hans Zahn

IPC: C02F1/00 ,  C02F103/00

Abstract: A method of cross-flow filtering wastewater from a diagnostic apparatus or a laboratory analyser, wherein the wastewater comprises nanoparticles and/or microparticles, and the wastewater is streaming in a laminar flow across a surface of a filter membrane, the method comprising: (a) streaming the wastewater across the surface of the filter membrane with a flow rate, so that the flow of the wastewater is a laminar flow with a Reynolds number (Re) of smaller than 500; (b) streaming the wastewater in pulse cycles across the surface of the filter membrane, wherein each pulse cycle comprises one active phase in which the wastewater is under a duty pressure and one inactive phase in which the wastewater is under an inactive pressure, wherein the inactive pressure is no more than 10% of the duty pressure and the active phases have a duration of greater than 50% of the corresponding pulse cycles; and (c) separating the nanoparticles and/or microparticles from the wastewater when the wastewater passes through the filter membrane. Also described is a cross-flow filtration system configured for performing the method.