Air Purification At Princess Alexandra Hospital Microbiology Laboratory

Camfil was asked to take readings of the levels of airborne particles in the microbiology laboratory facility which was located in a satellite building at princess Alexandra hospital – Harlow.

Alexander HospitalMany laboratory facilities in hospitals are situated in remote and detached locations to ensure more effective containment of contamination risk. These locations are often inadequately served by the centralised HVAC system.

There were concerns that there were contamination risks as hospital staff were being exposed to high levels of airborne particles and aerosols from medical pharma
compounds and possible exposure to airborne bioparticles.

The initial ambient air results did show that the concentration levels of airborne particles were higher than they should be because that the laboratory was being used to mix powdered medical preparations. There were also complaints about the frequent odours from liquid preparations and chemicals being used.

A CamCleaner unit was installed that had HEPA particle filtration and also gas molecular filtration for removal of noxious gases and odours. Continue reading

The Solution to Pollutants

The Camfil Group is a world leader in the development and production of air filters and clean air solutions. We manufacture and supply products that satisfy all the demands at airports to control particulate and molecular pollutants. These products also satisfy the recommendations of EN13779.

The European standard EN 13779:2007 focuses on achieving a comfortable and healthy indoor environment in all seasons with acceptable installation and running costs. It is now a national standard in all countries. It specifies the required filter performance in a system to achieve good Indoor Air Quality (IAQ) taking into consideration the outdoor air.

The Solution to PollutantsVarious solutions are available depending on the extent of the pollution problem. Molecular filtration may be applied in either the fresh air make-up or recirculation air systems.

Solutions for makeup air are preferred since the principal sources of pollutant are external. These tend to be more heavy duty and reflect the high pollutant concentrations and one-pass operation. Solutions for recirculation applications reflect lower ambient concentrations and multi-pass operation. Continue reading

Future Demands – Airports and Travel

Demand for air travel is at an all-time high and growing at an unprecedented rate. An industry forecast¹ indicates that if unconstrained, demand would grow approximately4% per annum. This rate would nearly double passenger numbers at airports by 2020 (4.2 to 7. 4 billion). In reality, growth will be constrained by capacity-issues in air space and at airports.


Two consequences of capacity restrictions will be more delayed flights and passengers having to spend more time at airports. Airport buildings are ventilated to provide breathing air for human comfort and health.

Large amounts of external air are drawn into airport buildings and this air will be heavily polluted. Airplanes are not the only source of pollution at airports. The ground traffic needed to support air operations cannot be ignored. Air quality is degraded by the operation of; push-back trucks, passenger buses, staff buses, baggage wagons, cleaning team vehicles, catering vehicles etc.

In fact, because most of these vehicles are powered by diesel engines and they operate in very close proximity to the gates, they are probably responsible for the greater proportion of pollution inside the terminals and other airport buildings. Continue reading