| 摘要 |
<p>Pumping system comprising a chamber (2); at least two ports (3,4); a deformable liquid- impermeable membrane (5), within the chamber, located between two of said ports, thereby defining two compartments (7,8), and a piezoelectric pump to pump (9) a liquid into or out of one of said compartments (7), thereby causing a change in pressure in said other compartment (8). In preferred embodiments, the membrane is inelastic. Liquid analyser utilizing such a pumping system.</p> |
