Methods, computer program software, and apparatus for improved tracking of published versions of Web pages for generating a comprehensive record of when each version of a subject Web page was published on the Web. Thus, the cost of raw materials and the cost of waste treatments are reduced to attain a considerable reduction in production cost. The inner elongate member can be axially disposed within a passageway defined by the outer elongate member. An objective function is defined for each ordering system and the objective function maps a pair of values of a value space to a number value. The UV unit and the ozone unit may be reversed so that the food product is first treated with the ozone and then subjected to the UV germicidal irradiation treatment.