Purified salt

We are the only salt mine in Italy specializing in the production of PDV salt (Pure Dried Vacuum). Volterra’s PDV salt, recognized as the purest in Italy with a certified purity of 99.9%, originates from uncontaminated brine extracted directly from underground deposits. This allows us to draw naturally saline water protected from external pollutants, which is then processed through an exclusive production cycle involving chemical-physical purification and crystallization using saturated steam.

Since the Etruscan era, the Volterra area has been a key site for salt extraction and usage, bearing witness to a centuries-old tradition. Today’s salt mines represent the evolution of this historical heritage, combining ancient know-how with industrial innovation in a unique production environment in Europe. The result is a high-grade crystal, free from impurities, with consistent uniformity, stability, and purity. Every step of the process from extraction to crystallization and final packaging is strictly monitored with rigorous internal quality controls.

Thanks to its outstanding physical and chemical characteristics, Volterra’s PDV salt is ideal for a wide range of applications: in water treatment (for tablet production and resin regeneration); in the food industry (for microbiological safety and preservation); in the chemical industry (as a stable, highly controlled raw material for compound formulation); and in general industrial processes where purity and reliability are critical requirements.

Today, Volterra stands for purity, consistency, and dependability essential values for those seeking a premium technical and food-grade salt sourced from an Italian supply chain with over two thousand years of history.