Re: cyanotype on cloth
Philip Jackson (p.jackson@nla.gov.au)
Wed, 16 Aug 1995 10:04:58 +22303754 (EET)
On Wed, 16 Aug 1995, Chris Read wrote:
> For a really intense
> blue, I found that after initial development, brief immersion in a wealk bath
> of pottasium dichromate and then washing gave a lovely dark shade. Whether
> this affects permanency, I'm not sure.
Please, please, don't use potassium dichromate to oxidise cyanotypes. A
glug of hydrogen peroxide added to the next to last rinse will serve the
same function and is much, much safer.
Philip Jackson
pjackson@nla.gov.au