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<p>[QUOTE=&quot;mlov43, post: 1854086, member: 16729&quot;]One of people here at CT is one of the people involved in developing VerdiCare.&nbsp;&nbsp; He wrote about how chemicals like acetone and xylene get rid of &#039;gummy residues&#039;:&nbsp; </p><p><br /></p><p>&quot;<i>In chemist speak, these are typically long-chain, organic materials which are readily soluble in a non-polar solvent like xylene. A basic principle in chemistry is &#039;like dissolves like&#039;. You always want to match your conservation solvent with the type of residue you are addressing</i>.&quot;[/QUOTE]</p><p><br /></p>

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