Savillex microcolumns are designed for ion-exchange analysis.  Savillex molded PFA microcolumns come in a variety of reservoir and capillary combinations to fit your needs.  Threaded microcolumns may also be used with a closure for added sample integrity and protection, and  porous PTFE frits are available for most microcolumns.  Savillex can also manufacture custom microcolumn.  Please contact us with your required reservoir size and capillary length specifications for pricing and availability.