[pure-silver] Re: Efke 50 in HC-110?
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 14 Apr 2006 12:05:15 -0400
I forgot to mention that the chromium in potassium chrome alum is
Cr(III) and not very toxic. So you don't need to worry about using it.
In small amounts it is an essential element and included in many
supplements. However, dispose of the used solution in an
environmentally safe way like silver containing solutions. The Cr(VI)
in such compounds as potassium dichromate is quite toxic.
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Gianni Rondinini
Sent: Friday, April 14, 2006 11:37 AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Efke 50 in HC-110?
On Fri, 14 Apr 2006 10:26:23 -0400, you ("Koch, Gerald"
<gkoch02@xxxxxxxxxx>) wrote:
>You may wish to get even more hardening by using a chrome alum
>hardening bath such as Kodak SB-3. This is a 3% solution of potassium
>chrome alum used for 5 minutes. This provides much more hardening than
>a hardenining fixer does. I used this years ago when the Adox films
>first
thanks. i'll look if i can find this thing.
regards,
--
Gianni Rondinini (30, tanti, RA)
Nikon user - Bmw driver
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