Laboratory ovens are a common piece of equipment that can be found in electronics, materials processing, forensic, and research laboratories. These ovens generally provide pinpoint temperature control and uniform temperatures throughout the heating process. The following applications are some of the common uses for laboratory ovens: annealing, die-bond curing, drying or dehydrating,

Polyimide Polyimide (sometimes abbreviated PI) is a polymer containing imide groups belonging to the class of high-performance plastics. With their high heat-resistance, polyimides enjoy diverse applications in roles demanding rugged organic materials, e.g ...

baking, sterilizing,

evaporating Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. High concentration of the evaporating substance in the surrounding gas significantly slows down evaporation, such as when humidi ...

. Typical sizes are from one cubic foot to . Some ovens can reach temperatures that are higher than 300 degrees Celsius. These temperatures are then applied from all sides of the oven to provide constant heat to sample. Laboratory ovens can be used in numerous different applications and configurations, including

clean room A cleanroom or clean room is an engineered space, which maintains a very low concentration of airborne particulates. It is well isolated, well-controlled from contamination, and actively cleansed. Such rooms are commonly needed for scientif ...

forced convection Forced convection is a mechanism, or type of transport, in which fluid motion is generated by an external source (like a pump, fan, suction device, etc.). Alongside natural convection, thermal radiation, and thermal conduction it is one of the met ...

, horizontal airflow, inert atmosphere,

natural convection Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convect ...

, and pass through. There are many types of laboratory ovens that are used throughout laboratories. Standard digital ovens are mainly used for drying and heating processes while providing temperature control and safety. Heavy duty ovens are used more in the industrial laboratories and provide testing and drying for biological samples. High temperature ovens are custom built and have additional

insulation Insulation may refer to: Thermal * Thermal insulation, use of materials to reduce rates of heat transfer ** List of insulation materials ** Building insulation, thermal insulation added to buildings for comfort and energy efficiency *** Insulated ...

lining. This is needed for the oven due to its high temperatures that can reach up to 500 degrees Celsius. Other forms of the laboratory oven include vacuum ovens, forced air convection ovens, and gravity convection ovens.

Forensic Forensic science, also known as criminalistics, is the application of science to Criminal law, criminal and Civil law (legal system), civil laws, mainly—on the criminal side—during criminal investigation, as governed by the legal standard ...

labs use vacuum ovens that have been configured in specific ways to assist in developing fingerprints. Gravity convection ovens are used for biological purposes such as removing biological

contaminants Contamination is the presence of a constituent, impurity, or some other undesirable element that spoils, corrupts, infects, makes unfit, or makes inferior a material, physical body, natural environment, workplace, etc. Types of contamination Wi ...

from samples. Along with forced-air ovens, they are also used in environmental studies to dry out samples that have been taken. These samples are weighed before and after to calculate the amount of

moisture Moisture is the presence of a liquid, especially water, often in trace amounts. Small amounts of water may be found, for example, in the air (humidity), in foods, and in some commercial products. Moisture also refers to the amount of water vapo ...

in the sample.

Laboratory Oven Safety

Laboratory ovens contain many components and other procedures that can be harmful to the user. Proper procedure and safety can help lead to

mitigating Mitigation is the reduction of something harmful or the reduction of its harmful effects. It may refer to measures taken to reduce the harmful effects of hazards that remain ''in potentia'', or to manage harmful incidents that have already occu ...

the amount of injuries and oven malfunctions when using laboratory ovens. Before the oven is used, check to make sure that the oven is still in good working condition. All temperature sensing devices need be operational and should shut off the oven if temperatures exceed there limits. If the oven is not operational, it must be unplugged and labeled with the statement "

Defective Defective may refer to:: *Defective matrix, in algebra *Defective verb, in linguistics *Defective, or ''haser'', in Hebrew orthography, a spelling variant that does not include mater lectionis *Something presenting an anomaly, such as a product de ...

Equipment" on the surface of the oven. Potential hazards that can be faced when using the laboratory ovens are fire hazards, health hazards, and burn hazards. Using plastic materials that can't withstand the temperatures of the oven will melt and ignite. This can cause a fire to start in the oven and room. Checking materials before continuing with experiments will help prevent potential fires. If some items are placed in the oven and haven't been cleaned properly, the heat will cause the residue of past experiments to become airborne. Properly cleaning and washing material before use is a great way to remove this hazard. Avoid touching hot surfaces on the oven when it is being used. Not doing so will result in the user being severely burned. The equipment needed while using the oven includes the following: lab coat, eye/face protection, heat resistant gloves.

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sleeve protectors and aprons will also be helpful in using the ovens. If the proper safety guidelines and equipment are used, the lower the chance of problems are to occur.

References

Convection Laboratory equipment {{Tech-stub