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<p>[QUOTE=&quot;Scuba4fun777, post: 7636860, member: 75199&quot;]Unless you’re creating nanoparticles, Electronics grade of just about any chemical is overkill for just about every other application. The contaminants in Electronics Grade chem’s are measured in parts per billion(ppb). 1 ppb is 0.001 mg per kg. Most instruments cannot even detect to that level.</p><p>Technical grade will PROBABLY work for any numismatic application, however to be safe, I’d stick with any of the other grades. USP/NF, FCC or ACS/Reagent grades will all work. Tech grade solvents will usually pass the purity tests for a food or pharma grade product, however they just don’t test them to such a degree. In addition, to keep the FCC (food grade) or USP/NF (pharma grades) designations, they must be stored and tracked differently from tech grade material, too.[/QUOTE]</p><p><br /></p>

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