F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/148
F16K 13/00 (2006.01) G01N 1/00 (2006.01)
Patent
CA 1103553
ABSTRACT OF THE DISCLOSURE A procedure especially appropriate in the manipulation of small batches of liquids, and an apparatus for carrying out the procedure are 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 chambers and of conduits connecting the chambers, wherein the conduits have been provided with the freezable valves. The transfer of liquids within the system is accomplished by means of control sig- nals directed to the valve heating elements. The valve heating elements comprise film resistors that are incorpor- ated in plate-like components which 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 provide incorporation in the apparatus of a large number of closable chambers appropriate for the storage and treatment of batches of liquid, whereby the apparatus may be employed in the capacity of an elec- tronically controllable device for analysis, determination and identification operations without moving mechanical parts.
325296
Kaartinen Niilo
Michaels & Associates
LandOfFree
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