A device and method for introducing a second laminar fluid layer to, or removing a second laminar fluid layer from, a first laminar fluid layer are provided. Each laminar fluid layer can contain two or more side by side laminar streams. The device includes a main flow channel, and at least one tributary...http://www.google.co.uk/patents/US6136272?utm_source=gb-gplus-sharePatent US6136272 - Device for rapidly joining and splitting fluid layers
