Patent ID: 8580575

Claim:
A reactor plate comprising: a sealed reaction well; a reaction well channel connected to the reaction well; and a syringe for sending a liquid to the reaction well channel and the reaction well, wherein the syringe has a cylinder having a discharge port connected to the reaction well channel, a plunger placed in the cylinder, and a cover body for hermetically cutting off a part of an inner wall of the cylinder to be brought into contact with the plunger from an atmosphere outside the cylinder, wherein the cover body has flexibility in the sliding direction of the plunger, and is connected to the cylinder and the plunger to create a sealed space enclosed with the cylinder, the plunger, and the cover body, wherein a first end of the cover body is hermetically fixed to an upper end of the cylinder, and a second end of the cover body is hermetically connected to an upper surface of the plunger, wherein edges of the upper surface of the plunger contact an inner surface of the cylinder, and the sealed space is arranged completely within the cylinder, and wherein the reactor plate further comprises: a variable capacity part formed separately from the syringe and provided apart from the syringe, the variable capacity part having a sealed internal space with capacity being passively variable; a syringe air vent channel provided between the syringe and the variable capacity part, the syringe air vent channel having one end connected to the sealed space and another end connected to the variable capacity part; and a reaction well air vent channel connected to the reaction well, the reaction well air vent channel being connected to the variable capacity part.