Microfluidic structure and method of measurement and/or positioning of a volume of a liquid

A method of measuring and/or positioning a volume of a liquid in a microfluidic system, having a measurement channel which is closed or closable on the side of its first end and is connectable to at least one fluid conduit via a valve, on the side of its second end, which measurement channel has on its first end a first gas permeable but liquid impermeable wall section which has means for a gas conduit, and wherein measurement channel has on its second end a means of isolation or cutoff, wherewith a defined volume is included between the wall section and the isolation or cutoff means;

• said method comprising the following steps:
• a) Connecting the measurement channel to a supply conduit, via the valve;
• b) Filling the measurement channel up to the first wall section with a liquid, from the supply conduit, wherewith a pressure difference is established between the supply conduit and the gas conduit;
• and
• c) Separating the liquid volume enclosed in the measurement channel between the wall section and the isolation or cutoff means, from a residual or excess amount of liquid disposed ahead of the isolation or cutoff means on the side of the second end of said measurement channel.