The Flexipol® Flexi-Bar prevents air from re-entering the bag. The vacuum created means that the food tastes fresher and lasts longer than food stored in conventional containers because it is not devoid of moisture. A vacuum is measured in inches of mercury. A total vacuum, or no air at all, measures 30 inches. The American Food and Drug Administration (FDA) rates a commercial vacuum at 21 inches of mercury, at which stage residual oxygen is reduced.
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