I posted this on the other thread that morphed into cleaning. I shall repost for those who don't care
Have you guys that use Ultrasonic and Wet tumblers ever read the ingredients or MSDS for the solutions sold by say Hornady?
It is Citric acid!
So all this hoopla about acid is nonsense.
Sure if you use a strong concentrate and leave it in there to long then you will have problems.
About 100 years ago my Mother and Her Mother used lemon juice (or vinegar) and salt (straigh up!) to clean the copper kettles and pans, Did not see to many of those get dissolved!
We cleaned pennies with it when they were real copper.
I keep saltwater (marine) fish corals and clams. The pumps get serious calcium build up. Vinegar is to slow and weak to clean them. I use a 10 parts water to 1 part muriatic (HCL) to clean them.. Also pour it the pool to lower pH and OMG we swim in it! So if you follow the directions and mix it correctly there is no problem.
Always add acid to water not the other way around. Wear safety glasses.