Laminar flow cabinets and biosafety hoods

A fume hood in laboratories is an effective means of capturing flammable, irritating, corrosive, carcinogenic, etc. vapors. to prevent personnel exposures and prevent their spread in the laboratory atmosphere. When the hatch is lowered, the cab is also a physical barrier that protects the operator from hazards such as splashes, aerosols, fires and minor explosions.

In professional performance and for many laboratory jobs, it is necessary to protect the product from contamination, either from the environment or from personnel. When working with dangerous products or microorganisms, it is also necessary to protect the operator and the environment. To do this, we have laminar flow hoods that allow us to protect the manufactured product and biosafety hoods that allow us to protect the product, personnel and the environment. The choice of material will depend on the material you are working with.

It works by maintaining negative air pressures inside the cabin and preventing air particles from escaping to the outside. The speed at which air enters the hood is very important to ensure the safety of the equipment. High speeds can create turbulence that will allow indoor air to escape, but low speeds may not be enough to contain it.

How does a laminar flow hood work?

Laminar flow hoods are highly specialized equipment that allow obtaining a sterile and safe area for any need that is required within a laboratory. They can be: Horizontal and Vertical. It basically constitutes a space; which, through a specific air treatment; It allows working in an area with strict control of non-road particles. This type of equipment is used for certain processes where it is necessary to take extreme control of contamination.

These systems are normally used for microbiological control procedures; packaging process, sterile filling, etc. but in no way should they be used for processes involving strains of contaminating biological agents; whether they are known or not.

For these cases there are biological safety cabinets, prepared for the protection of the product / process, the operator and the environment

How does a fume hood work?

A hood or hood in laboratories are an effective means of capturing flammable, irritant, corrosive, carcinogenic vapors, etc. to prevent personnel exposures and avoid their dissemination in the laboratory atmosphere. When the hatch is down, the cab is also a physical barrier that protects the operator from hazards such as splashes, aerosols, fires, and minor explosions.

Fume hoods are a type of ventilation system with the primary function of protecting the user against exposure to chemical vapors, gases, dust, and aerosols. They also function as physical barriers between reagents and the laboratory, offering protection against inhalations, spills of hazardous substances, reactions, and fire.

A typical hood has a box-shaped structure with a movable window. The experiments are carried out inside the hood that is ventilated constantly and safely, usually by means of fans and ducts. Chemical vapors are extracted and diluted many times in the atmosphere rendering them harmless to human health. If there are environmental concerns, a treated exhaust system can be installed to remove most of the vapors from the outside air stream.

Lab Hoods: Differences

Laboratory hoods are fundamental pieces in the operation of this space to maintain air quality. The variety of hoods in the industry responds to the needs of scientists. Laminar flow hoods, biological safety hoods, and fume hoods all serve a purpose.

These are forced circulation chambers that, depending on their specifications and design, provide different levels of protection. They are essential in a clinical microbiology laboratory and are classified according to the level and type of protection. In principle, it is necessary to distinguish the differences between fume hoods, laminar flow cabinets, PCR cabinets and biological safety cabinets.

The fume hood (or fume hood) is a ventilated enclosure that captures the fumes and vapors from the handling of chemicals in the laboratory. Although it constitutes a very useful equipment in the containment of the chemical risk, it does not offer any protection against biological risks.

Our best-selling Flow Cabinet:

PCR cabinet

  • Waterproof Plug LED Display
  • 2 waterproof plugs that are located on the rear wall, the LED display for optimal convenience
  • UV Lamp Side Glass Window
  • Side glass windows maximize light and visibility


  • UV sterilization system.
  • HEPA filter efficiency 99.999% at 0.3 μm.
  • Interlock function: The UV lamp can only be turned on when the front window is closed, ensuring the safety of the operator.
  • UV timer (0-90 minutes): when the setting time expires, the UV lamp turns off automatically in preparation
  • for the next experiment.

Types of Laminar Flow Cabinets for the Laboratory

Flow Booth Categories

Class I Biosafety Cabinet

That works under negative pressure and is frontally open. The air from the premises is introduced through the front opening and is 100% extracted from it

Class II Biosafety Cabinet

They are designed to vent forcefully to the outside. During operation, cabin air is drawn to the top of the cabin and reaches a filter

Horizontal Laminar Flow Cabinet

They are ideal for jobs that must ensure the protection of products against external and cross contamination.

Vertical Laminar Flow Cabinet

They are those in which the HEPA filter is placed in the upper part of the cabin, so the unidirectional air flow moves through lines

Cytotoxic Security Cabin

The KALSTEIN Cytotoxic Safety Cabinet is the premium solution for cytotoxic / antineoplastic drug processing

PCR cabinet

Economic cabinets that allow pre-PCR and PCR techniques and equipment to be carried out inside.


Gas extractor cabin

The extraction cabinets are designed to capture, contain and expel the emissions generated by toxic substances in the laboratory.

Mini Cabin

These models have at least four advantages. The first is that the air speed is adjustable. Number two is that they are table type


What is your ideal laboratory Flow Cabinet?

Security levels in a security cabin

The biological safety cabinet represents a primary containment barrier that allows safe work with biological agents. It is an equipment designed to prevent the exit of bioaerosols from the work area and, therefore

¿What is a PCR work cabinet?

The polymerase chain reaction (PCR) is a laboratory technique used to amplify DNA sequences. The method uses short DNA sequences called primers to select the part of the genome to be amplified.

Learning to use your security booth

The biological safety cabinet is an equipment designed to control aerosols and microparticles associated with the handling of biological material, potentially toxic or infectious.

¿Which biosafety cabinet should I choose to work with COVID-19?

The biological safety cabinet represents a primary containment barrier that allows working safely with biological agents such as the virus that causes COVID-19. It is equipment designed to prevent the escape of bioaerosols from the work area and, therefore, protects people and the environment from possible exposure to these agents. There are three types, known as: class I, class II and class III.

Laminar Flow Booths on Offer

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