Abstract: An automatic inspecting system for detecting the presence of and identifying whether the proper replacement container has been installed at a work station in a processing line, which automatic container checking system is capable of reading identifying information on the container, e.g., a bar-code, and comparing the information read with stored information indicative of a desired identification to determine whether there is a match. In the absence of a match, an alarm or other means can be used, by way of notification of a problem or to automatically stop the processing line.