Selecting a Furnace on Amazon.com
Laboratory furnaces are used in laboratory and research applications to perform chemical and compound analysis, to heat-treat small steel parts, and to heat objects to high temperatures without exposure to contaminants or moisture. Most often used for ashing organic and inorganic materials, a muffle furnace has unexposed heating elements. It is also used for ignition testing, conducting gravimetric analysis, and for determination of suspended and volatile solids. A vacuum furnace removes air and gases from the chamber, reducing the risk of contamination. A tube furnace provides a uniform temperature and is most often used for heating samples and heat-treating small parts, firing, sintering, and other materials testing, while an annealing furnace is used to harden and strengthen metals. Safety mechanisms on some furnaces prevent overheating. Factors to consider when selecting a lab furnace include object size and shape, controller type, temperature range. Manufacturers include Lindberg.