| 摘要 |
<p>The application discloses a procedure appropriate in the manipulation especially of small batches of liquid and an apparatus for carrying out the procedure, these being based on the use of valves closable by freezing and openable with the aid of electrical heating elements. The apparatus comprises an integral system composed of volumes and of conduits connecting these, wherein the conduits have been provided with said freezable valves. The transfer of liquids within the sytem is accomplished by means of control signals directed to the valve heating elements. As valve heating elements film resistances incorporated in plate-like components are employed in such manner that one component establishes a plurality of valves. At the same time these valves are connected to a common refrigerator. The components afford the possibility to incorporate in the apparatus a great number of closable appropriate for the storage and treatment of batches of liquid, whereby the apparatus may be employed in the capacity of an electronically controllable device for analysis, determination and identification operating without moving mechanical parts.</p> |
