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
This archive was generated by hypermail 2.1.5 : 11/14/02-02:40:26 PM Z CST