From: Brian Ellis (bellis@tampabay.rr.com)
Date: 06/12/00-01:02:21 PM Z
Hi Liam - Thanks for the response. Just to be sure I get this, if I have 48%
sulphuric acid I would, as you say, use 104 ml of it, plus 700 ml of water
into which I would mix the dichromate, and then add the approximate 196 ml
of water to arrive at the final 1000 ml of stock solution. Right
(hopefully)? Brian
----- Original Message -----
From: Liam Lawless <lawless@ic24.net>
To: <alt-photo-process-l@skyway.usask.ca>
Sent: Monday, June 12, 2000 9:09 AM
Subject: Re: Lawless Enlarged Negative Process
> Brian,
>
> I didn't receive your question; my address did change a while back.
>
> Sorry if the instructions are unclear, but what I meant was that the final
> volume should be 1 litre whatever strength acid you're using; for 48%
you'd
> want about 104 ml of acid (50 X 100 / 48), but for 10% H2SO4 you'd need to
> start with less water. Whether you start with 500 ml, 700 ml or whatever
> really doesn't matter as long as you've got 1 litre at the end (although
the
> dichromate dissolves more easily in larger volumes).
>
>
>
> Liam
>
>
>
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