Patent ID: 8632739

Claim:
An apparatus adapted for nucleic acid denaturization and hybridization of at least one biological sample on at least one carrier member in a chamber, said apparatus comprising: a bottom member supporting said at least one carrier member; a hydrophilic porous solid reservoir configured to sorb and desorb water and water vapor; a lid for the chamber, detachable from the bottom member, the lid and the bottom member forming a closed chamber when the lid is positioned atop the bottom member, wherein the lid is configured to position the reservoir inside the closed chamber directly above the at least one biological sample such that the reservoir does not touch said at least one biological sample, when said lid is positioned atop the bottom member to form the closed chamber; and a sample temperature controlling device below said at least one carrier member controlling the temperature of said at least one carrier member and said at least one biological sample, wherein said reservoir either sorbs or desorbs water and water vapor so as to control relative humidity within said chamber at above 85% relative humidity, when said lid is positioned atop the bottom member to form the closed chamber.