Both the heating function and the magnetic function have been tested, and work as they should. Please see pictures and message me with any questions. The item "Corning PC320 PC-320 stirrer mixer hotplate magnetic hot plate laboratory H9" is in sale since Tuesday, June 30, 2020.This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Lab Mixers, Shakers & Stirrers\Magnetic Stirrers & Hotplate Stirrers". The seller is "prem2er" and is located in Longmont, Colorado. This item can be shipped to United States.