Gunut. Sorry I cant give an answer to your question because, I have about 10 KG of the stuff in a heavy duty plastic bottle in my workshop, I just pour enough out to do the job and then return it back into the bottle after I am done, well I have no need to keep it pure or clean. Though if I want to use some for a Clock or Barometer repair I drip the mercury through Nitric Acid to clean it up enough to look good.



The only lessons in my life I truly did learn from where the ones I paid for!