The Analog laboratory hot plate Series CB500, SB500 is manufactured by Stuart Equipment. The product’s top plate is either made of metal or ceramic. The huge surface is good for heating multiple vessels and the product integrates up to 30 x 100 ml beakers. These hotplates are good for heating at the same time and the knob is very easy to utilize and it is located on the front of the hotplate that controls the top plate temperature.