Specific levels of residual oxygen can also be removed. At the 5%, 2%, or 0.5% level of effectiveness, packages such as trays, cups, or tubs can be flushed with inert gas, in combination with HEPA air filtration, and heat sealed to lock in inert gas. Vacuum systems, with or without gas exchange, can be supplied to lengthen shelf life for items such as fresh deli salads, soups, or dairy products.
Osgood Industries, Inc: Extended shelf life
Osgood Industries (Oldsmar, FL) designs special features to extend product shelf life, including heat sealing, HEPA air filtration, gas flushing, and vacuum packaging.
Aug 31, 2002
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