Fluidic separation and detection

A flow apparatus for detecting a component in a mixture, the apparatus comprising:

• a separation channel for first and second flows in contact, wherein the separation channel is configured to permit lateral movement of components between contacting first and second flows;
• a downstream flow separator in fluid communication with the separation channel, wherein the flow separator is configured to divert a part of the first fluid flow, a part of the second fluid flow, or parts of the first fluid flow and the second fluid flow, from the separation channel, and
• a detection zone comprising:
• a detection channel provided downstream of and in fluid communication with the flow separator and configured to receive a plurality of diverted flows from the flow separator;
• a label channel configured to subsequently label the component in the diverted flows from the flow separator;
• an observation zone configured to record an analytical signal indicative of the quantity and the electrical properties of the component;
• and
• a waste channel at the downstream end of the observation zone.