Will my Doulton® or British Berkefeld® filter element remove Pseudamonas aeroginosa?
A23) Pseudomonas aeroginosa is a potential coloniser of water system networks and is similar in size to E-coli. FICL candles should therefore, in theory, show a similar reduction efficiency for Pseudomonas aeroginosa as for E-coli. However, since this organism is rapid growing and may recover quickly, without physically testing FICL ceramic filters with this type of organism, it is impossible to predict a performance claim. FICL is not prepared to attempt a prediction of performance, since the filters provide a <99.99% barrier, but do not provide 100% barrier to E-coli. A limited number of cells may pass through the filter which, unlike E-coli, may form colonies down stream of the filter. It would be more suitable to combine filtration with a disinfection stage to ensure removal of Pseudomonas aeroginosa.
