A micro-liter liquid sample, particularly a biological sample, is analyzed in a device employing centrifugal and capillary forces. The sample is moved through one or more sample wells arrayed within a small flat chip via interconnecting capillary passageways. The passageways may be either hydrophobic...http://www.google.com.au/patents/US7459127?utm_source=gb-gplus-sharePatent US7459127 - Method and apparatus for precise transfer and manipulation of fluids by centrifugal and/or capillary forces