Cooktops see a lot of action. These glass surfacesmust survive extreme temperature fluxes, heavy pots and pans, and daily wear for decades. For those reasons, the test methods used to measure the strength of glass-ceramic closely resemble everyday situations. Glass-ceramic behaves differently depending on the shape and contact area of the impact item. Therefore cooktops are testedwith a compact ball impactor and a flat pan impactor.
We’ve spent years in the lab running test after testto ensure the safest and most durable glass-ceramic cooktops on the market. But don’t take ourword for it — see for yourself how world-class glass is tested:
1. Ball-drop impact test
UL standards require all household ranges to passball-drop impact tests. For glass-ceramic cooktops,testers drop a 2-inch steel ball weighting 1.18 pounds from a height of 20.25 inches directly onto the cooktop surface. The glass-ceramic must withstand the impact of the ball without breakingand without experiencing line current leakage greater than 5.0 MA in order to make it to market. CERAN glass-ceramic cooktops not only withstand the UL ball-drop impact test, but maintain integrityat cooking temperatures up to 1120 degrees Fahrenheit.