| http://www.w3.org/ns/prov#value | - An exemplary percent weight ratio of methylene chloride to acetone to non-volatile solvent is 75:24:1.In some embodiments, the solvent mixture comprises glacial acetic acid.In some embodiments, the solvent mixture comprises a combination of glacial acetic acid with at least one volatile solvent such as acetone and/or methylene chloride (e.g., a mixture of methylene chloride and acetone).In some em
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