Their first album was released in 1995, Acidi e basi (Acids and Bases), followed in 1997 by Metallo non metallo (Metal Nonmetal) and in 1999 by Zero: they were later called "la trilogia chimica" ("the chemical trilogy") because every title has a reference to chemistry and the initial letters (AB-MN-Z) are respectively the first, the central and the last ones of the alphabet.
A ternary acid is an acid that has the elements hydrogen and oxygen along with another element, often a nonmetal.