Laboratory ovens are forced air thermal convection ovens or in other terms Hot Air Oven.
These hot air ovens are used to attain constant temperatures inside every corner of the oven chamber.
The most common size of Laboratory oven being used has (24 x 24 x 24) inches Inner Chamber dimensions, although they start from (14 x 14 x 14) Inches inner chamber dimension.
The maximum temperature for laboratory ovens can vary from 100 degree Celsius to over 350 degrees Celsius.
However 250 degrees Celsius is the most preferred range as it falls midway and is suitable for most lab applications.
These can also be termed as clean room ovens.