ordered these three little coins for cheap from e-bay and decided to see if I could do any clea....conservation. Before: Overnight in bottled lemon juice:
Yeah, I didn't expect so much from them. The Hungarian Denar came out nice though. I think @lordmarcovan posted some of his awhile back. I have a couple of others.
Never thought of using it on silver, but I've had some success with lemon juice soaks for white spots on WWII era zinc coins
35g Thiourea (the most expensive part of the formula 35g Citric Acid (canning aisle in the well-stocked grocery store) stir into water to make one liter. That is your stock solution. You can dilute further if you want to "pull it" at an intermediate stage. The stock solution is already far slower acting than EZest.
If you want to get all fancy schmancy, you can add something that might change the color of the liquid if the pH gets too high. I just look for sulfur precipitate. Sure sign the juice is getting tired.
