Crow Wing County Extension Office offers pressure canning testing


Pressure canning is the only safe method of preserving vegetables, meats, poultry and seafood to use over the winter months and the Crow Wing County Extension Office can help.

Dial gauges should be tested for accuracy each canning season. Only the canner dial gauge is needed for testing, which can be brought in to the Extension Office.

If the gauge cannot be removed, bring in the canner lid. Metal weighted gauges need not be tested. Dial gauges that read high cause under-processing and may result in unsafe food, and low readings cause overprocessing.

After getting the dial gauge tested, pressure adjustments can be made if the gauge reads up to 2 pounds high or low. Replace gauges that differ by more than 2 pounds.

Pressure canners are encouraged to check the rubber gasket if the canner has one. The gasket should be flexible and soft, not brittle, sticky or cracked – if it is, it should be replaced. Also, make sure any small pipes or vent openings are clean and open prior to canning.


The Crow Wing County Extension Office is able to offer testing of pressure canner gauges for home canners at its office in the historic county courthouse at 326 Laurel St., Brainerd. Office hours are 12:30-4:30 p.m. Monday through Friday.

Call 218-824-1065 or visit for more information.

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