RE: Problems clearing with cyanotype.

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rurmonas@senet.com.au
Date: 11/08/02-03:11:11 AM Z

Quoting Kees Brandenburg <info@co-web.org>:

> Here <http://polychrome.nl/brown_green.jpg> are my seven year old
> (brown/green) test strips. Both were exposed for 6 min under a bank
> of UV tubes. You can see the staining in the upper grey scale. The
> lower oner was made with the green citrate, same paper and processing.

Thank you Kees,

The yellow colouring I see is the same as in the test strip. The worst
of the papers I have tested is a bit darker than this. It seems fairly
certain that the brown citrate is causing the stain.

Thank you.

Richard 

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