A microtitration plate for use for automated polymerase chain reaction (PCR) is provided. The microtitration plate includes a frame which has a plate with a multiplicity of holes molded of a polypropylene or a polycarbonate. The microtitration plate further includes a multiplicity of receptacles made of the same polypropylene or polycarbonate. The receptacles are fixedly connected to the plate at the holes by fusing the same polypropylene or polycarbonate thereby directly molding the receptacles to the plate Each receptacle has a receiving portion protruding from the underside of the plate, and is accessible from the upper surface of the plate through apertures.