| 摘要 |
<p>A polymerase chain reaction assembly comprises a flow-regulation valve (1), where the valve has a valve chamber (3) within a housing (2) and inlet (7) for incoming fluid medium (L), the housing has an outlet (8) for a fluid fraction (L1) and a second outlet (9) for a second fraction (L2), and the chamber has a valve piston (4) that slides along an axis (6) with an internal position sensor (11). A polymerase chain reaction assembly comprises a flow-regulation valve (1), where the valve has a valve chamber (3) within a housing (2) and inlet (7) for incoming fluid medium (L), the housing has an outlet (8) for a fluid fraction (L1) and a second outlet (9) for a second fraction (L2), and the chamber has a valve piston (4) that slides along an axis (6) with an internal position sensor (11). The polymerase chain reaction (PCR) assembly changes the temperature in a DNA sample in the form of a fluid flow (L1, L2) as it passes through a flow-regulation valve (1). The first outlet passage (8) has a heater (18). The second outlet passage (9) is unaffected by the heater and discharges to the PCR sample chamber. The sliding valve position moves between a first position in which the first outlet is almost completely closed and a second position in which the second outlet is almost completely closed. The valve piston position is altered by an electromagnet and magnetic piston.</p> |
