Sample transfer method and system

The present application relates to methods and systems for the transfer of samples collected on swabs (or similar sample collectors) onto particular types of substrates for subsequent analysis or other processing. The method involves contacting the sample collector containing a sample including the charged substance with the electrophoresis matrix; applying an electric field across the electrophoresis matrix to effect transfer of the charged substance from the sample collector to the electrophoresis matrix. The present application also relates to useful systems, components and processes that may assist in the performance of an operation on a charged substances within an electrophoresis system. Such systems may comprise a first electrolyte reservoir comprising a first electrode; a second electrolyte reservoir comprising a second electrode; a thread extending between the first and second electrolyte reservoirs; a third reservoir through which the thread passes, and a controller for controlling the application of an electric field across the thread so as to effect movement of a charged substance along the thread. The third reservoir may be a sample loading reservoir for loading sample onto the thread, or an operation reservoir within which an operation is performed on the charged substance. The system allows for charged substances to be taken along the thread and then subjected to an operation within a reservoir in a second location.