Exposure Controls in a Laboratory - Lab Fume Hood, Biosafety Cabinets, Laminar Flow Cabinets

In a laboratory setting you will find exposure controls which include equipment and procedures designed to minimize inhalation, skin absorption, or ingestion of hazardous materials. It is important to note that fume hoods and biosafety cabinets are two common pieces of lab equipment that can greatly decrease the potential for inhalation exposures to hazardous chemicals or biological agents. Even though fume hoods and biosafety cabinets might appear similar they are different and perform different tasks. It is essential that laboratory fume hoods and biosafety cabinets are used fittingly to afford the user protection.

For a safe laboratory setting and environment many additional hazard-specific or process-related controls are available. You will find that Lab Fume Hoods play a crucial role in creating the perfect lab setting. Since properly operating and correctly used fume hood can reduce or eliminate exposure to volatile liquids, dusts, and mists it is always advisable to use a laboratory hood when working with all hazardous substances. In addition, a lab fume hood or other suitable containment device must be used for all work when working with particularly hazardous substances.

You will find a ductless hood DH-I equipped with a filtration device designed to control non-toxic chemicals, nuisance odours, and particulates. There are DH-II a ductless hood capable of meeting all DH I requirements and equipped with a filtration device designed to filter manufacturer approved toxic contaminants up to filter break through only. A DH II ductless hood is not designed to provide secondary containment beyond primary filter break through. DH-III is Ductless Hood capable of meeting all DH II requirements and equipped with a filtration device designed to filter manufacturer approved toxic contaminants beyond primary filter break through by providing secondary back-up protection. Ductless laboratory fume hoods should be used only where the hazard is very low, and where the access to the hood and the chemicals used in it are carefully controlled.

Laminar flow hoods are designed with the purpose for critical operations where clean air (class 10+) and adequate protection to the user from fumes and particles, is necessary. A laminar flow hood provides a bench carefully enclosed to prevent contamination. Kewaunee’s laminar flow hoods provide a wide choice for the users depending on the applications.

https://www.kewaunee.in/ provides laboratory fume hoods, ductless hoods, biosafety cabinets, and laminar flow hoods that are ventilated enclosures having their own fan, which draws air out and through filters and ultimately recirculates it into the laboratory. The filters are designed to trap vapours generated in the chemical hood and exhaust clean air back into the laboratory.


Safety Cabinet , Lab Planning , Lab Furniture , Lab Equipment

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