Written by Theresa Rose on July 25, 2016

Fresh produce is in abundance this time of year, and canning is a way to preserve produce in bulk to enjoy it all year round. Pressure canners with dial- type gauges should be tested each year for accuracy, according to Iowa State University Extension and Outreach.


ISU Extension and Outreach of Lee County is offering free pressure canner testing at 414 North Main Street in Donnellson. Free information of canning safety and tips are also offered. The office is open from 8:00 am to 4:30 pm Monday through Friday. It is recommended that those interested in testing their canner gauge call ahead to schedule an appointment. The phone number is 319-835-5116.


Dial- gauge pressure canners are the only ones that can be tested. To have dial- gauge canners tested, bring the canner lid only. The entire canner is not needed. The pressure gauge and all vents and openings in the lid will be checked for proper functioning. It is not necessary to test weighted or rocker-types pressure regulators because they cannot be adjusted and will usually remain accurate.


Any other questions can be directed to the Lee County Extension office at 319-835-5116 or by visiting


ISU Extension and Outreach is part of an educational network supported by Iowa State University, local county governments, and the United States Department of Agriculture.  ISU Extension and Outreach works to provide learning opportunities for citizens of Iowa by providing unbiased, research-based information that will improve quality of life.