Distilled water is water purified by distillation so as to free it from dissolved salts and other compounds. Distilled water in equilibrium with the carbon dioxide in the air has conductivity of about 0.8×10-6 S cm-1. Repeated distillation in vacuum can bring conductivity down to 0.043×10-6 S cm-1 at 18 °C. The limiting conductivity is due to self ionisation
Generalic, Eni. "Distilled water." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
Glossary
Periodic Table