Laboratory tube furnaces are specialised heating devices designed for uniform and controlled high-temperature processing of materials within a cylindrical tube. These furnaces are commonly used for applications such as calcination, annealing, and material synthesis, where a precise thermal environment is critical. The tube, often made of quartz, ceramic, or metal, allows samples to be processed in a controlled atmosphere, with options for introducing gases to create specific conditions, such as vacuum or inert environments. Tube furnaces offer excellent temperature uniformity along the length of the tube, making them ideal for research in fields like materials science, nanotechnology, and chemistry. Equipped with digital controllers, these furnaces allow for precise temperature management, ensuring consistency and reliability in thermal experiments.