Furnaces

Applications include material sintering, ashing, annealing, and thermal analysis.

Box furnaces provide an enclosed chamber with broad access and are commonly selected for larger samples, multiple vessels, ashing, and general heat-treatment workflows. Tube furnaces heat samples inside a process tube and are better suited to smaller samples, defined heated zones, or workflows requiring gas flow or an inert atmosphere. Selection should also account for maximum temperature, chamber or tube dimensions, controller capabilities, electrical requirements, and sample-loading method.

Uniformity is achieved through insulation design, heating element placement, and control systems.

Ranges vary by model, often extending into high-temperature regimes.

Safety features include over-temperature protection and controlled heating cycles.

Atmosphere control may be required when a process must limit oxidation, introduce an inert gas, or manage gases generated during heating. Tube furnaces are commonly considered for gas-flow and inert-atmosphere workflows, although the process tube, end seals, gas connections, and operating limits must be evaluated as a complete system. Some box furnaces provide air inlets and vents for atmosphere exchange, but this does not necessarily make the chamber gas-tight or vacuum-rated; confirm the specifications of the individual model.