>> Sodium bicarbonate solutions become more alkaline with age ----------- As I said, I think you misread my statement; it's easy to read carbonate instead of bicarbonate, especially after reading a lot of emails. I think you will agree that sodium bicarbonate is already the acid salt of carbonic acid and cannot absorb C02. >What happens is actually the opposite, the pH of carbonate falls. =20 This of course is correct when speaking of carbonate. Jerry -----Original Message----- From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Ryuji Suzuki Sent: Thursday, February 17, 2005 3:00 PM To: pure-silver@xxxxxxxxxxxxx Subject: [pure-silver] Re: baking soda as wash aid From: "Koch, Gerald" <gkoch02@xxxxxxxxxx> Subject: [pure-silver] Re: baking soda as wash aid Date: Thu, 17 Feb 2005 14:51:57 -0500 > I would recommend this only if a fresh solution was used each time.=20 > Sodium bicarbonate solutions become more alkaline with age slowly=20 > appoaching the pH of sodium carbonate. This can cause the emulsion=20 > soften. You have a very strange belief. What happens is actually the opposite, the pH of carbonate falls. -- Ryuji Suzuki "Keep a good head and always carry a light camera." =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.