公开(公告)号：US20230010923A1

公开(公告)日：2023-01-12

申请号：US17778832

申请日：2020-11-05

申请人： SHIMADZU CORPORATION ,  Kyoto University

发明人： Jun YANAGIBAYASHI ,  Shinya IMAMURA ,  Kenichi YASUNAGA ,  Yasushi ISHIHAMA ,  Koshi IMAMI ,  Tomoya NIINAE ,  Yumi KOMORI

IPC分类号： G01N30/32 ,  G01N30/14

摘要： A pump unit includes a pump and a metal ion trap. The pump includes a metal member that comes into contact with a mobile phase. The pump pumps a mobile phase through a flow path. The metal ion trap includes a filter element. The filter element includes a metal ion retention structure for retaining metal ions by interacting with the metal ions included in a mobile phase. The filter element is provided in the flow path for a mobile phase pumped by the pump. The pump unit may be provided in a chromatograph.