The present invention relates to an arrangement (10, 20) for preparing samples (15, 27), submergible in a liquid medium. The arrangement comprises a section provided with a device (13, 23) for controllable generation of a magnetic field through influence of a control signal, said magnetic field being...http://www.google.com/patents/US20020048534?utm_source=gb-gplus-sharePatent US20020048534 - Sample preparing arrangement and a method relating to such an arrangement