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I use the term "evaporust" as its a recognizable name. However, I buy the exact same sh!t in concentrated form locally for $25/gallon and it makes 40 gallons of "evaporust".

Check your local yellow pages for "chemical manufacturers" or "cleaning supplies". There are small mom and pop shops out there that make this stuff and its dirt cheap. If they don't sell to the public, talk to the right person and they'll generally sell on a "cash" basis. Chemistry is chemistry, "evaporust" is just a brand name for a generic chemical - like "metalprep".


Hey that sounds great,i'm not to proud to change for that price. Do you have a "name" to ask for when i inquire?