The object of the contract referred to is the supply of the cationic polyelectrolyte reagent for the treatment plants managed by the company Depuradores d'Osona S.L in Vic, Manlleu, Vall del Ges, Centelles, Taradell, Tona, Roda de Ter, Folgueroles, Prats de Lluçanès, Olost and Viladrau", in accordance with the prescriptions established in the set of particular technical prescriptions. (EXPIRED)