Abstract: A container includes a gripping groove and a panel structure that allows it to withstand retort or heat sterilization of a low acid liquid nutritional product contained therein. The container can be formed of a multilayer material that has titanium dioxide and iron oxide in an intermediate regrind layer and in at least one of its inner and outer layers. The titanium dioxide and iron oxide are provided together in the same meltable pellets, which are used for forming the container.

Abstract: A testing apparatus is disclosed which is useful for determining if air filters are providing clean/sterile air within acceptable aseptic processing and/or clean room operation acceptable contaminant levels. The advantage of the disclosed testing apparatus is that air filters may be tested "on-line" during a production process as opposed to the traditional testing methods which included removal of the air filter for off-line testing. Less down-time is experienced using the disclosed testing system. A series of valves positioned at the outputs from the air filters, which allow communication with a particle counter, are controlled by a computer which sequentially activates the valves to test the contamination level of the air which passed through an air filter during the production process.