A laboratory furnace is a device used in laboratories for generating uniform heat for various purposes such as compositional and chemical analysis, heating, melting, and burning laboratory samples. It is one of the most widely used and expensive equipment in laboratories due to its high-temperature range and long period of use.
There are different types of laboratory furnaces, including box furnaces, tube furnaces, and crucible furnaces. Box furnaces, also known as ash furnaces, have swing-out doors or vertical lifts to accommodate products of various sizes. They are commonly used for heat-treating, calcining, pre-heating, tempering, and other high-temperature processes.
Tube furnaces consist of a cylindrical heating chamber with a heating element running through it. They are suitable for applications such as chemical synthesis, materials science, engineering, and geological research.
Crucible furnaces are designed for heating and melting samples in crucibles. They are commonly used in metallurgy, ceramics, and other industries.
Laboratory furnaces can have different specifications, configurations, sizes, atmospheres, and controls. They can operate in various atmospheres, including air or oxidizing, vacuum, and inert. Some furnaces offer one or two heating modes, allowing operators to adjust temperature and stability using a single set point or programmable controller.
The size of a laboratory furnace is an important consideration, with three main types available: benchtop, cabinet, and walk-in. Benchtop furnaces are the smallest, while walk-in furnaces are the largest and can accommodate multiple samples.
In addition to their heating capabilities, laboratory furnaces may also have other features such as computer interfaces, integrated software, and over-temperature protection, making them suitable for a wide range of testing applications.
Bottom-load furnaces are a specific type of laboratory furnace designed for large, heavy, or high-volume samples. They allow for easy loading from the bottom without the need for cranes. These furnaces typically achieve uniform heating across the chamber.
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