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Canning -- Miscellaneous

Why does one process at 10 pounds pressure in a weighted gauge canner but 11 pounds pressure in a dial gauge canner?

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If one is processing the product in a weighted gauge canner and is doing so at an altitude of 0-1,000 feet, one needs to only use 10 pounds pressure. The 10 pound weight actually functions at 10.5 pounds. If processing the product in a dial gauge canner and doing so at an altitude between 0-2,000 feet, one needs to use 11 pounds of pressure.

PREPARED BY: Angela M. Fraser, Ph.D., Associate Professor/Food Safety Specialist, NC State University in July 2004

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