公开(公告)号：US11679385B2

公开(公告)日：2023-06-20

申请号：US17124375

申请日：2020-12-16

Applicant: ENTEGRIS, INC.

Inventor： John C. Gaudreau ,  Evan Warniers ,  Edward J. Washington

IPC: B01D46/00 ,  G01N15/08 ,  B01L3/00

CPC classification number: B01L3/50 ,  B01D46/0086 ,  G01N15/08 ,  B01D2273/18 ,  B01L2300/043 ,  G01N2015/084

Abstract: A media sample holder includes a base and a plurality of retention assemblies including retaining tabs and opposing flexible release lever arms, configured to allow attachment of the base to an attachment adapter. The media sample holder can attach a media sample on or near a filter. The media sample holder held in the media sample holder can have a different removal efficiency curve than a removal efficiency curve of the filter. The media sample can be placed at or near the filter for a period of time, then tested to determine the status and/or life of the filter based on the relationship between the remaining life, exposure, or removal efficiency of the filter and the exposure or removal efficiency of the tested media sample.