: Offers reagent-grade water typically used in science education and laboratory settings.

: While mostly stocking distilled water, Walmart's marketplace offers DI options from third-party sellers like Snugell . Specialty Industrial Retailers :

Deionized (DI) water is specialized for industrial, laboratory, and technical cleaning uses where mineral-free water is essential. Unlike distilled water, which is common in grocery stores, true deionized water is often sourced through specialty science suppliers or industrial retailers. Top Retailers for Deionized Water

: Sells clinical-grade water from EK Industries , meeting ASTM Type I standards for laboratory use. Local Options & Alternatives

: Specializes in bulk quantities, including gallons, 55-gallon drums, and 220-gallon totes.

: Best for small-to-medium home use (1–2 gallons).

: Carries various brands like Alliance Chemical and ChemWorld .

: Stocks brands like SMPLY for industrial demineralized needs.