Here is the evidence on whether or not we believe the Instant Pot Max is safe to use for pressure canning. We present scientific evidence to support our claim.
Correction: The Presto digital canner has NOT been approved by the USDA. Their faked logo and disingenuous language..."meets USDA canning guidelines" is disappointing.
Sadly, the Instant Pot Max is no longer available.
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Here is the information on the logger. I purchased the HiTemp 140 logger with the 2" stem and no shield from Thermoworks in American Fork, Utah. You will also need the connection kit and a windows computer. The software is a free download from their site. Call and talk to them--they were very helpful--great customer service.
https://www.thermoworks.com/hitemp140?quantity=1&ht140=4