[pure-silver] Re: Cleaning Brown Bottles
- From: "Kurt J. Griffin" <kjg@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 11 Jan 2012 19:46:56 -0700
Title: [pure-silver] Re: Cleaning Brown
Bottles
The classic cleaner for chemistry glassware is hot chromic acid
mixed in concentrated sulfuric acid. This tends to oxidize most
things to where they come off the glass more easily. We used to
use this routinely to get the glassware spotless. It will remove
flesh just as well as whatever the scum was in the glassware, though.
Due to the caustic, toxic, and potentially carcinogenic nature, this
not used as frequently as it once was. Disposing of it is also a
real challenge.
A Cr-free substitute oxidizing agent is Nochromix
(http://godax.com/) The googles come up with a variety of other
replacements, mostly detergent-based, e.g.:
http://www.biosci.ohio-state.edu/~safety/safety/Biosafety/BioSOP/CrAcid.pdf
Happy cleaning!
--Kurt
My first reaction would be to fill the bottle up with vinegar and
let it set at least over night. Stronger acids are
also a possibility, but I don't need to remind Tim about ventilation.
Strong mixes of everyday stop bath might be easier, work faster and
you already have it on hand. Back in the day when I played
french horn, we cleaned the valves with muriatic acid by dipping the
valves in it and it did a great job of eating off the crud without
eating the metal of the inside of the valves with the tolerances were
EXTREMELY tight.
Since you don't know what it is for sure, no one can be sure what
will be released no matter what you try. For every one in this
situation just assume its bad and take precautions.
Subject: [pure-silver] Re: Cleaning Brown Bottles
From: "BOB KISS" <bobkiss@xxxxxxxxxxxxx>
Date: Wed, January 11, 2012 1:13 pm
To: <pure-silver@xxxxxxxxxxxxx>
DEAR TIM
I think Richard is the one to
answer this Q but I would guess that
you might try one of those tray cleaning formulae.
CHEERS!
BOB
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Tim
Daneliuk
Sent: Wednesday, January 11, 2012 3:46 PM
To: Pure-Silver Mailing List
Subject: [pure-silver] Cleaning Brown Bottles
Someone gave me several nice old Kodak brown glass bottles. One of
them was crudded up beyond use, but the others are almost usable.
I say "almost" because there is some residue on the inside
that will
not come off with repeated hot water/soap/rise cycles. (I believe
they may once have held D-76.) The bottle opening is, perhaps
about 20mm but the bottle diameter is probably around 80mm. This
means it's kind of difficult to get into the bottle to scrub it
out in any reasonable manner.
Any ideas out there of how to get the residue out of these bottles
or should I just toss them into the garbage?
--
-----------------------------------------------------------------------
Tim Daneliuk
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