The Concept: A commercial cartridge attachment designed to fit directly onto existing school water coolers and RO filters.How it Works: Standard school RO filters strip out 99% of all natural minerals. This cartridge uses natural Himalayan pink salt and mineral stones to safely re-mineralize the schools drinking water at the nozzle.Why it Solves the Problem: Every student who drinks from the school cooler automatically gets hydrating, mineral-rich water without changing their daily habits.