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Correction: at 16:50 time, the sediment is not nitrate, but silver SULFATE (Ag2SO4), poorly soluble in water, and very well in sulfuric. In the video - Detailed silver mélange - washing off silver plating without dissolving the base with available means. A simple, cheap and reliable method. And also, is it profitable or not to deal with silver? That is the question .... **************************************************************************** The channel will have videos about what I do and how. I am not a professional, but an amateur - so you can see not how everything is wonderful and super, but real problems and ways to solve them, as well as proven working methods. There will be everything - both sad and joyful. Each of you will find something close to your heart. Subscribe, click the bell, thumbs up and write a comment - it's free, and then everything will be fine ))) You can write to me by email and it is advisable to let me know in the comments - [email protected], or better yet, Vkontakte https://vk.com/id587946420 And you can even provide financial assistance for the development of the channel, if you have the desire and opportunity. https://yoomoney.ru/to/410016681700033 If you are going to violate my rights, let me know. All the methods I show are in open sources and are publicly available. All videos are staged, posted for informational and entertainment purposes, are not advertising or a call to action. The author is not responsible for any consequences caused by the material of this video.