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Laboratory ovens are heating devices that can be mounted bench top or on shelving. The typical applications are general lab work, drying glass ware, stability testing, hardening and sterilizing. The only difference between laboratory and industrial furnaces is that lab furnaces do not use refractory for insulation. Their sizes range from 0.5 cu ft to over 50 cu ft. with the most popular sizes in the 15 to 27 cu ft range.
Temperatures range from 65 to 700 C( 150 to 1300 F) The temperature controller can be "set point" which means that the oven will go and stay at a preset temperature until the power is turned off. Another controller option is the "programmable" comtroller. Different temperature levels and the time intervals at these temperatures can be preset. The most common types of lab. Ovens are:
Natural Convection: These are the most common ovens. Air circulation and temperature uniformity will vary slightly depending on the load and its distribution.
Forced Convection Bench These units have a fan mounted, usually in the back of the oven. The fan moves the air for uniform heat distribution.
Vacuum Ovens These ovens are sealed to hold a negative atmospheric pressure.
Inert Atmosphere Ovens These units are designed for heat applications with oxygen sensitive materials
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