Patent ID: 9182327
Filing Date: 2015-11-10
Classification: G01N

Abstract:
1. A flow control assembly for use in preparation of samples for analysis by solid phase extraction, comprising: a housing assembly adapted to be fitted as a coupling between a syringe barrel having a barrel chamber therein and a syringe needle that has a needle bore extending therealong and defines a first fluid port at its tip, which housing assembly includes structure defining a first passage arranged to be in fluid communication with the needle bore at its inner end and to locate a solid phase sorbent that contacts fluid traversing said first passage and adsorbs predetermined species; a second fluid port in said housing assembly; and a valve arrangement for selectively communicating the barrel chamber with said first passage and thereby with the needle bore or with the second fluid port for facilitating selective aspiration or delivery of fluid to or from said first fluid port across said solid phase sorbent or to or from said second fluid port bypassing the solid phase sorbent.