Laminar Flow Hood

Laminar fume hoods, also known as microbial hoods and microbiological hoods, are used specifically for tissue culture to prevent environmental contamination by biological samples. In laminar hoods, the air is sucked through the HEPA filter and after purification, it is injected into the user by a very smooth and uniform airflow. The inner compartment of laminar hoods is made of integrated steel, this feature prevents the accumulation of dirt and germs on the surface of the hood and the ease of the sterile hood compartment.

The mechanism of the laminar  fume hood is such that each airflow creates a different function. In microbial hoods, air can flow horizontally and vertically

Laminar fume hoods use two types of filters because of the biological hazards they can pose: primary and secondary filters. The primary filter is sensitive and disposable. The power of this filter is 0.55 microns and it is responsible for collecting larger suspended particles such as dust and this filter acts as a pre-filter and prevents premature saturation and erosion of the secondary filter and increases its durability and life.
The existence of a HEPA filter with 0.12-micron input for cabin space and 99.99% absorption power makes the laminar hood chamber free of any microorganisms. In the laminar fume  hood system, 75% of the air inside the cabin is recycled and the remaining 25% is added to the indoor environment and exhausted. This mechanism extends the life of the HEPA filter and ensures the safety of the laboratory environment.

Laminar hood technical specifications

 

• Hood system of vertical aeration type of air circulation (with this system, the life of filters is increased)
• Exterior chamber of the iron sheet with a white coating of electrostatic powder resistant to temperature and humidity
• The insole of the hood is made of 304 steel in the form of three mesh pieces and can be sterilized.
• Equipped with a pre-filter and two HEPA filters (main and exhaust) with an efficiency of 0.3 microns and a power of 99.99%
• Having a fluorescent lighting system
• Having a fluorescent lighting system
• Having a sterile surface system and cabin wall through a UV lamp
• Having a two-way centrifugal circulation technique
• Having an electric sliding door made of Plexiglas with vertical movement
• Having a profile frame with wheeled bases with brakes that can be easily detached from the device.
• It is possible to place the hood on laboratory platforms.
• The device equipped with a Finger Touch control system
• Having a digital filter operating clock
• The delay timer is a UV lamp.
• In this device, about 75% of the air is circulated and 25% is removed from the hood after passing through the HEPA filter.

For more information and expert advice, you can contact our partners in Doris.