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Author Topic: Best way to clean a mouthpiece?  (Read 15639 times)
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Geezerhorn

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« Reply #20 on: Aug 22, 2017, 01:30PM »

It is, but they dilute it very precisely and also time the exposure.  I suspect if you left a mouthpiece in there too long it would dissolve.

Really? Could you set up an experiment on an old mpc and get back to us when it is dissolved, please?  Amazed

There are a whole list of disclaimers and cautions on the back of the container. I suggest anyone thinking about using it should read them first and then make their own decision, and/or experiment on an old piece first.

...Geezer
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timothy42b
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« Reply #21 on: Aug 23, 2017, 05:09AM »

Here's the MSDS:
http://www.jelmar.com/msds/2012/CLR_Calcium_Lime_Rust_MSDS.pdf

I tried to cut and paste but it's an image.

It's acidic with a pH of 2.1 to 2.3.  That's enough to make me careful.  I would not mix it with other cleaning products (not wanting to open that old debate.) 

If I had some I'd drop a brass bolt into it and see what happens, if I had a brass bolt. 

I see that it's not the same as toilet bowl cleaner.  I had thought the type of acid would be the same but they're very different.
http://cor.cleaneasier.com/php/MSDS/Zep/Acidic%20Toilet%20Bowl%20Cleaner.pdf

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Tim Richardson
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« Reply #22 on: Aug 23, 2017, 06:57AM »

Eric,How do you go about polishing a mouthpiece out of curiosity? My Greg Black (like many Greg Blacks I've seen and some of the older Schilkes, I think it has something to do with the very high quality of the silver plating) has started to go a bit black, but I dislike the idea of A. taking material off of the mouthpiece that I love so dearly already, and B. putting abrasive chemicals where I put my mouth.Should I just leave it as is?

Hi John,  sorry about the missed reply!!

An easy polish is with Hagerty's Silver polish & either a silver polish cloth or a soft rag, like an old t-shirt.

Then a quick scrub with soap & hot water.

If the tarnish is too heavy for the above,  a quick, light zip on a buffing wheel with rouge will clean it up nicely.
A light touch won't affect anything.


Eric
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Eric, Leandra, Sara, Jared & Lily
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BGuttman
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« Reply #23 on: Aug 23, 2017, 09:02AM »

The MSDS Tim linked to lists lactic and gluconic acids.  These are organic acids much like vinegar.  While I wouldn't want to store a mouthpiece in the solution, I doubt that an extended soak will do a lot of damage -- neither has enough strength to dissolve silver metal, or even brass.

I'd be more concerned if there were mineral acids like hydrochloric or nitric.  These can dissolve silver.  Actually, hydrochloric will create a deposit of silver chloride, which is light sensitive and turns black in light.  That's how photographic film works (does anybody remember photographic film?   I used to make the stuff).
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Bruce Guttman
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