I am having a hard time deciding how to filter my samples for UPLC analysis. Has anyone had success using microcentrifuge filters for sample prep? I have been looking into:Costar® Spin-X® Centrifuge Tube Filters - Spinfilter Ny 0.22um from Cole Parmer Ultrafree-MC microcentrifuge filters - Durapore PVDF membrane, pore size 0.22um from SigmaThese would be used as an alternative to using syringe filters. I have to filter out possible particulate contiminants from my sample which have not been problematic (binding to, or clogging my column or tubing) for HPLC analysis, but am concerned that they may gum up my new H-Class. I am thinking that microcentrifuge filtering would be so much more cost/time efficient and generate less waste than purchasing filter units, syringes and then still having the additional cost of storage vials. But I have no experience using these units.Thanks for any advice you may have!