| 摘要 |
<p>A sample concentrating device comprises a hollow body (3) having a waste chamber (10) and a concentration chamber (20) communicating with said waste chamber (10) through a concentrating membrane (21), wherein said concentration chamber (20) has a pressurised gas inlet (23) connectable via valve (27) to a supply of pressurised gas (29), and said waste chamber (10) has a pressure relief opening (45) able to be opened to ambient pressure, wherein the concentration chamber (20) has a diluted sample inlet (31) connectable to an inlet valve (35) for inputting a suspension of a sample diluted in a liquid into said concentration chamber (20) and a concentrated sample outlet (39) connectable to an outlet valve (35) for outputting the contents of said concentration chamber (20). The valves (27, 35) are adapted to be operated by control means such as a computer (49).</p> |
