1. purified water: purified water is the most basic beverage choice, and contains no additives, phosphorus and potassium.
2. Some pure juice (please check the label): Some juice brands do not add phosphate or potassium salt as preservatives, but the specific situation varies from brand to brand. Please read the product label carefully to confirm its composition.
3. Phosphorus-free and potassium-free drinking water: Some special drinking water products are marked as phosphorus-free and potassium-free, which are suitable for people with specific dietary restrictions.