At what pH must an added medicine be soluble and stable in water before being added to Prismasol 4 mmol/l Potassium?

For Prismasol 4 mmol/l Potassium, verify additive solubility and stability in water at pH 7.0–8.5; absent compatibility studies, do not mix medicines, and the physician must assess incompatibility (colour changes, precipitation, insoluble complexes or crystals), consult the additive’s instructions, and add compatible medication only after reconstitution for immediate administration.