Abstract text

Disclosed herein is a reactor plate which prevents the entry of foreign matter from the outside and the pollution of an outside environment. The reactor plate includes sealed reaction wells (5), reaction well channels (13, 15, 17) connected to the reaction wells (5), a sealed well (35) provided separately from the reaction wells (5), a sealed well channel (35a) connected to the sealed well (35), a syringe (51) for sending a liquid, a syringe channel (51c) connected to the syringe (51), and a rotary switching valve (63) for connecting the syringe channel (51c) to the reaction well channel (13) or the sealed well channel (35a). The sealed well channel (35a) is openably sealed with the rotary switching valve (63) at an end thereof not connected to the sealed well (35). Therefore, even when the sealed well (35) previously contains a liquid, foreign matter does not enter the sealed well (35) from the outside and leakage of the liquid contained in the sealed well (35) to the outside does not occur.