How to Say "liquid preparation" in Spanish
The Spanish word for “liquid preparation” is “solución” — B2 level.
English → SpanishB2
nounB2formal
pharmaceuticals

Examples
El químico preparó una solución salina concentrada.
The chemist prepared a concentrated saline solution.
Debes agitar la solución antes de aplicarla.
You must shake the solution before applying it.
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