The top plate measures 5" x 7". The hotplate can reach temp. Of up to 500C and boil 1L of water in about 20 minutes. The item "Corning PC420 Hotplate and Stirrer" is in sale since Friday, September 21, 2018. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Other Healthcare, Lab & Dental". The seller is "homealchemy" and is located in Elmhurst, Illinois. This item can be shipped to United States.