A laminar airflow hood is a central ice of equipment in any biological or microbiological laboratory. It provides an aseptic environment that can be used for both research and postgraduate teaching. A steady flow of ultra clean air keeps the workspace free from contamination.
Laminar airflow hoods are cabinets that include a number of air blowers. These pass air through high efficiency particular air (HEPA) filters that remove all dust particles large than three microns. The resultant air is free from any fungal contaminants or bacteria and flows usually at a velocity of around 27 metres per minute across the working area. The air current has to be steady and without any turbulence so that air from the outside cannot enter the hood and contaminate the working space.
The laminar airflow may be in a horizontal or vertical direction. It is always advisable to use horizontal flow hoods for research on plant tissue cultures. The filtered air blow horizontally towards the laboratory operator and provides the best protection from contamination for the cultures. But horizontal flow should not be used for work on bacteria, fungi, or hazardous organisms.
Vertical laminar flow hoods are used for clinical and microbiological work. The air flows vertically from the top of the hood down to the workspace and the laboratory operator. The level of containment for such an airflow hood can be increased in a number of degrees to create biological safety cabinets. These can be used for work on hazardous organisms as any aerosols that may be generated during the investigations and experiments are filtered by a second HEPA filter before they are released through a dedicated exhaust duct and outside the building.
Surfaces within the hood may be further sterilised by switching on short wave ultraviolet light fluorescent tubes for a few minutes. The tubes are installed within the hood but the regulating switch is outside it. Before starting work, laboratory operators should wash hands thoroughly and scrub with a suitable disinfectant. Sterile gloves may be worn during investigations but these may not always be an asset. Gloved hands may become contaminated just as easily as un-gloved ones.
Laboratory workers should conduct investigations in the centre of the hood. Article within the hood have to be arranged so that clean air does not wash over any dirty objects and later contaminate areas that should remain sterile. The operator must stand at least six inches from the front end of the hood to avoid creating a back-flow of air into the hood. The HEPA filter should be checked regularly to ensure it is not blocked. Any slowdown in the airflow speed is a sure sign of filter blockage and that the filter should be changed.
Laminar flow hoods maintain a laboratory working area free from particulates and microbial contaminants. They provide air flow in a vertical or horizontal direction depending on the nature of investigations to be undertaken. But the hood itself is not a method of sterilizing the working area. This can be achieved by shining ultraviolet light on the space.
Tom Brown writes extensively on laboratory management for a wide range of websites and blogs covering the biological sciences. For more information on laminar flow visit the website http://www.containedairsolutions.co.uk.
Why Is Quantity Surveying Essential in Construction Industry
Quantity surveying is an essential part of the Australian construction industry. It is the process of calculating and estimating the...
How to Maintain Upholstered Furniture
No matter if you have pets or kids, maintaining your upholstered furniture is quite a challenge. Even though vacuuming it...
How Do I Find a Good Bubble.io Developer?
Finding a good bubble developer to help build your app or digital product can seem challenging. How can you choose...
When is a right time for home repairs?
Summer is a popular time for a renovation around the globe. While it is true that bright days and warm...
Top 15 Alteryx Competitors
The world has seen a tremendous rise in startups and new incorporations in the business world. Companies have great potential...
Latest Wedding Trends for 2023
If you’re planning on getting married this year, chances are you’re probably overwhelmed and confused when it comes to wedding...
Tips To Make The Most Of Your City Break In London!
London is one of the best cities in the world, known for its quintessentially British culture, great nightlife, fantastic museums...
The Ultimate Guide To Packing For A Trip To London
London is one of the best cities in the world, known for it’s rich history, quintessentially British culture, the best...
Top 15 Web Development IDEs
The web development field has seen sustainable growth throughout the years. As technology is advancing, so is the web development...
12 Key DevOps Programming Languages to Still Popular in 2022
“DevOps is not a goal, but a never-ending process of continual improvement.” – Jez Humble Delivering the finest of services...
Festival Fashion Style Tips For 2022
Summer is well and truly here and with that comes the festival season! From the biggest stars performing on stage...
4 Tips For Making Your Wardrobe More Sustainable
Everyone is trying to make more of an effort to make their wardrobe more sustainable, but often are unsure where...
7 tips on how to organize a budget-friendly move
If you are planning a move any time soon, you might be worried about all the expenses that wait for...
Metal Roof Colors: How to Select the Best Color for a New Roof
Choosing the right type of material for your roof is enough of a hassle already that the question of choosing...
Simple Ways To Feel More Confident At The Gym
If you are new to the gym, or you haven’t been in a while, sometimes you might not feel completely...
Tech7 years ago
Creating An e-Commerce Website
Tech7 years ago
Design Template Guidelines For Mobile Apps
Business7 years ago
The Key Types Of Brochure Printing Services
Business3 years ago
What Is AdsSupply? A Comprehensive Review
Travel10 years ago
Who Else Wants Also Nfl Hat
General7 years ago
Kobe Bryant With His Unique Nba Jerseys
Tech8 years ago
Why Small Businesses Can't Ignore Mobile Technology
Tech7 years ago
Climb Google Using These Checklists