[pure-silver] Re: baking soda as wash aid
- From: Ryuji Suzuki <rs@xxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 17 Feb 2005 15:23:43 -0500 (EST)
From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
Subject: [pure-silver] Re: baking soda as wash aid
Date: Thu, 17 Feb 2005 15:13:05 -0500
> I think you misread my email. Sodium bicarbonate solutions increase in
> pH with age.
I didn't. I said that doesn't happen. I said pH goes down instead.
It's a simple gas exchange with carbon dioxide in air, and it
increases the carbonic acid, not carbonate or bicarbonate.
--
Ryuji Suzuki
"Keep a good head and always carry a light camera."
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