Question: what is type 1 water?
Answer: Type I - Ultrapure, Type I water is defined by the American Society for Testing and Materials (ASTM) as having a resistivity of >18 MΩ-cm, a conductivity of <0.056 µS/cm and <50 ppb of Total Organic Carbons (TOC). ... Less pure than Type I and II water, Type III water removes 90-99% of contaminants.