Scientific, weighing, measuring, signaling, checking (supervision), apparatus and instruments, particularly laboratory apparatus and instruments for stirring, blending, shaking, dispersing, cooling, heating, tempering, concentrating, and centrifuging of samples, inter alia, for chemical, medical, biochemical, pharmaceutical, and physical laboratories, in particular steam sterilizers; apparatus and instruments for conducting, switching, transforming, accumulating, regulating, or controlling el...