Severel portuguese museums have problems with
                     pijons and as far as I know there is not any company
                     in Portugal working with protection sistems against
                     pijons, specially in old buildings.
                     Can somebody help me ?
 
                     Mario brito
                     Museu D. Diogo de sousa
                     Av. Central, 32
                     4700 Braga
                     Portugal
                     fhone 351 53 73706
                     fax   351 53 612366