Ceramic Glass Heater Tops - The ceramic glass heater tops are made from sheet glass cut to size and mounted into cast aluminum frames. These tops are white, very flat, pass energy quickly through the glass into the sample, and are very resistant to chemical spills. They clean easily.
Ceramic glass tops have a maximum plate surface temperature in the units of 450ºC. They heat and cool very quickly. They are designed for heating a solution in a vessel.
Milled-Flat Cast Aluminum Heater Tops - The milled-flat, cast aluminum heater tops are made from an alloy that allows for minimum pitting when milled. They are milled-flat to within 0.01 corner-to-corner. The tops are very flat and provide even heating across the surface when compared to the ceramic glass tops as those conduct heat better. Aluminum heater tops cool more slowly, and do not tolerate aggressive chemicals very well. They will stain if certain chemicals are spilled on them.
These tops have a maximum plate surface temperature in the units of 450ºC. They are recommended for heating a solid on the heater plate surface.