Re: Problem with cyanotype

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From: Richard Urmonas (rurmonas@senet.com.au)
Date: 10/14/02-06:36:26 AM Z


On 2002.10.14 17:31 Alberto Novo wrote:
> Richard,
> before throwing the fe am citrate, try adding some drops of potassioum
>
> dichromate to the working solution until the blue disappears.

I quickly tried this. I added some dichromate and the solution did
become cleaner. I coated some paper with this. Washing it before dry
showed no staining (previously I had staining). However once the paper
had dried I had a similar amount of stain to the original solution.
Perhaps my citrate is very bad, and so I need to add more dichromate,
but first I will see if I can get good citrate.

Thank you for your suggestion

Richard

---
Richard Urmonas
rurmonas@senet.com.au

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