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News & Press: News

EJPPS Volume 24 Issue 2

03 September 2019   (0 Comments)
Posted by: Tamsin Marshall
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Last printed edition available to download. New online edition to be available shortly.


Please find the contents for the latest edition. 


Volume 24 Issue 2

PDF Version


Editorial: The New Format European Journal of Pharmaceutical and Parenteral Sciences (EJPPS)

Peer Reviewed Paper : Contamination risks evaluated with the LR-Method in unidirectional airflow at different air velocities
Author: Bengt Ljungqvist, Johan Nordenadler and Berit Reinm├╝ller

Abstract: Operating rooms for patients undergoing infection-prone surgery often have unidirectional flow supply air systems. Many systems installed in Europe have low air velocities, i.e. equal and below 0.3 m/s, while other supply air systems have velocities about 0.4 m/s. The velocity, given by the supplier, is mostly the inlet air velocity just below the filter screen of the unidirectional flow system. The purpose of this paper is to describe contamination risks in unidirectional airflow without obstacles at different air velocities. To evaluate contamination risks, the method for limitation of risks, the LR-Method, has been used. The results show that the convection flows and arm movements from a person standing in the unidirectional airflow system have a great impact on the contamination risks at air velocities below 0.4 m/s and that the air velocity should at least be 0.4 m/s to achieve a good protection efficacy.

Regulatory review 

Malcolm Holmes

PHSS activity and initiatives report

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