[Testing for Pseudomonas aeruginosa: an additional parameter for assessing microbiological quality of dialysis water]. / Ricerca di Pseudomonas Aeruginosa nelle acque di dialisi quale ulteriore parametro microbiologico di qualità.

In 1995 the regional council of the Lazio region passed Decree N.1650 which regulates the maintenance of dialysis equipment and sets limiting values for microbiological and chemical parameters used to assess the quality of water used for dialysis fluids. As regards the microbiological parameters, limiting values were set for total bacterial count and endotoxins. However, in recent literature, serious health effects following dialysis have been described; these suggest the advisability of including testing for more specific microorganisms and of testing greater samples of dialysis water. In this study, conducted over 2 years, in addition to normal microbiological parameters, dialysis fluids were tested for the presence of bacteria of the Pseudomonas species. Results show that samples which met the standards for dialysis water set by legislation were actually found to be contaminated by Pseudomonas species.

[Effectiveness of the maintenance operations on the air conditioning systems of a university building in relation to the microbiological quality of the air indoor]. / Efficacia degli interventi di manutenzione sugli impianti di condizionamento di un edificio universitario in relazione alla qualità microbiologica dell'aria indoor.

The microbiological quality of the air indoor is influenced from various factors and one of the most important is represented from the maintenance of the conditioning systems. In this study it has been estimated the effectiveness of an intervention of cleaning and maintenance on the systems of conditioning of an university building executing sampling before and after such intervention. The two results were confronted and it is observed as the maintenance of the air conditioners has influenced on the quality of the air indoor.