Vertical or horizontal laminar flow hood Choosing a laminar flow hood is not always an obvious thing to do. It is crucial because differences in characteristics can have serious consequences for your samples. Vertical or Vertical Laminar Flow Hood are developed with a common goal: to protect your samples by creating a work environment free of particles and contamination. Please note, these laboratory hoods are not intended to protect the operator. In this article, we offer to guide you in your choice, offering you clear explanations highlighting the difference between a laboratory hood with vertical or horizontal laminar flow. There are different types of Cleanroom Hepa Filter but for a laminar flow hood you must use a HEPA H14 filter: this filter lets pass a maximum of 5 particles of 0.1 micron per litre of air.
A turbine: It is a powerful fan which allows to suck in the outside air and “blow it” through the HEPA filter. -A pre-filter can also be used to prevent the HEPA filter from clogging too quickly.
What is flowhood? Horizontal Flow Hood are designed to create a particle-free work surface by passing air through a high efficiency filtration system and out the work surface into a one-way air stream. Typically, laminar flow hoods are closed on the sides and maintain a constant air pressure to ensure that contaminants do not come into contact with the working samples. There are several types of laminar flow hoods, each designed for specific applications. All laminar flow hoods respect an air passage speed at the front of the equipment of approximately 0.45 m / s. This meets the standards in force.