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<p>[QUOTE=&quot;Kentucky, post: 2681764, member: 33176&quot;]pH is a measure of hydrogen or hydronium ions in aqueous solution, thus has nothing to do with pure acetone.&nbsp; If acetone is put in water, due to the presence of two pairs of unshared electrons on the oxygen, it functions as an electron pair donor which is the definition of a Lewis Base.&nbsp; However it is such a weak Lewis Base that a solution of acetone in water would remain neutral to all intents and purposes. </p><p><br /></p><p>As to using water, distilled (or deionized) water and/or acetone, do whatever makes you happy as long as the solvent you have chosen is pure and fresh.&nbsp; Even the use of tap water isn&#039;t a real no-no if you blot off any remaining with a soft cloth.&nbsp; Best use a fresh distilled water rinse or a fresh acetone rinse.[/QUOTE]</p><p><br /></p>

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