Food Preservation & Food Safety

For information on Safe Preserving Recipes, Current Food Safety Topics, Safe Product for Food Pantries Project and more follow this link:  Safe & Healthy Food for Your Family

Dial Gauge Canner Testing – check dial gauges yearly

Check dial gauges for accuracy before use each year. Gauges that read high cause under-processing and may result in unsafe food. Low readings cause over-processing. 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.

Testing available at the St. Croix County Extension Office, 1960 8th Ave, Suite 140, Baldwin, WI.  Please call 715-531-1937 to make an appointment to have your Dial Gauge Canner Tested.

Where to have your dial gauge checked

  • Presto – will test gauges at no charge however they only tests certain brands (see below).
  • All American – has been selling their pressure canners with both a dial and weighted gauge for each unit. Weighted gauges do not need to be tested. For testing of All American dial pressure gauges, contact Wisconsin Aluminum Foundry, 920-682-8627
  • Other models of pressure canner gauges – please check with the manufacturer.
  • You can also check with your local county Extension office to see if the testing is done locally. 

If you send your pressure gauge to Presto

Presto will only test gauges from these brands

  • National.
  • Magic Seal.
  • Maid of Honor.
  • Kook-Kwick.
  • Presto.

Steps to send in your pressure gauge

  1. Carefully remove dial gauge from canner and package in foam, bubble wrap or newspaper to avoid shipping damage.
  2. Ship gauge only. If you cannot remove the gauge from the canner lid, send canner lid with the gauge attached.
  3. Gauges are checked within three working days of receipt and shipped for return.
  4. Send to:
    National Presto Industries Inc.
    ATTN Gauge Testing
    3925 North Hastings Way
    Eau Claire, Wisconsin 54703-3703

For more information, phone Presto Customer Service: 1-715-839-2121 or 1-800-877-0441.
Questions?: Contact GoPresto.
Website: www.GoPresto.com.

Replacement parts

Replacement gauges and other parts (e.g. gasket, safety plugs) for canners are often found at stores that sell food preservation equipment or from canner manufacturers. When ordering parts, be sure to provide your canner model number and describe the parts you need.


Regional Food Preservation Publications

Play it Safe! Safe Changes and Substitutions to Tested Canning Recipes

Oops! Remaking Jams and Jellies

Regional Food Preservation Newsletter

September/October 2023 Vinegar with 5% Acidity: It Matters

July/August 2023 Can I use my ceramic cooktop stove when canning?

July/August 2022  the focus is on dial gauge testing for pressure canners and preserving summer squash

May/June 2022 – Topics in this newsletter focus on making sweet spreads and the function of sugar, and freezing and drying strawberries.

March/April 2022 – Topics in this issue are pickling eggs and Easter egg safety.

January/February 2022

November/December 2021 – Topics in this newsletter are hot sauces (a popular holiday gift item) and having dial gauge canner checked.

July/August 2021 -Topics in this edition include:  Elderberries: beautiful to look at, not for canning and save herbs for cooler seasons

May/June 2021

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