[pure-silver] Re: SPAM DETECTED: Re: Viradon vs KBT
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 5 Nov 2004 16:24:20 -0800
----- Original Message -----
From: "DarkroomMagic" <info@xxxxxxxxxxxxxxxx>
To: "PureSilverNew" <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, November 05, 2004 3:50 PM
Subject: [pure-silver] Re: SPAM DETECTED: Re: Viradon vs KBT
> Richard
>
> How do you get to KHCA being 10% sodium sulfite? 'The
> Darkroom Cookbook'
> calls for 200 grams of sodium sulfite per liter in formula
> 137. Does that
> not mean 20%?
>
>
>
>
>
> Regards
>
>
>
> Ralph W. Lambrecht
>
Their formula is wrong. I have no idea where they got it.
The paper from Kodak Labs describes the working solution as
2% sulfite. The formula I have for KHCA is:
Sodium Sulfite, dessicated 100 grams
Sodium bisulfite 25 grams
EDTA tetra-sodium salt 5 grams
Sodium Citrate 5 grams
Water to make 1 liter
This is also in line with the MSDS
Also note that 200 grams/liter is close to the saturation
limit for Sodium sulfite.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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