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<p>[QUOTE=&quot;medoraman, post: 1076351, member: 26302&quot;]Actually, silver is not used in plumbing solder at all. I know for a fact, since I have a few rolls on hand. Silver solder mainly today is only used, (for household purposes), on air conditioner units since it alone can withstand the extreme temperature differences. Silver used to be used for electrical soldering in homes but now almost no soldering is done inside of a home. Solder for plumbing is now an acid solder, not silver.</p><p><br /></p><p>I do not know to what extent silver is used for soldering industrially.[/QUOTE]</p><p><br /></p>

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