HOT PLATE: Cast alloy, Square element

HOT PLATE: Element, square cast alloy

• A square element Hot Plate for use in the science laboratory.

(Wikipedia excerpt: ..."A hot plate or hotplate is a heated flat surface on a stove or electric cooker on which food may be cooked.[3] It comprises a heated top which is flat and usually circular, and may be made of metal, ceramic, or heat-resistant glass, with resistive wire forming a heating element fitted underneath and a thermostat to control the temperature. An electric current is passed through the wire, heating it; the thermostat controls the temperature the top reaches.

... may be a portable self-contained tabletop small appliance cooktop, or incorporated into an electric cooker or kitchen stove.[4] Portable types are often used for food preparation, generally in locations where a full kitchen stove would not be convenient or practical. Hotplates are used in laboratories, outside the domestic environment, mainly for heating, and possibly continuously stirring, liquids.[5]

In laboratory settings, ...are generally used to heat glassware or its contents. Some ... provide an integrated magnetic stirrer, allowing a heated liquid to be stirred automatically. In a student laboratory, hot plates are used because baths can be hazards if they spill, overheat or ignite because they have high thermal inertia (meaning they take a long time to cool down) and mantles can be very expensive and are designed for specific flask volumes...")