Hi María.
For my gum impressions and coal, I use the amonium salt, leaving from
dilutions to 5% until the 1 and 2%.
-----Mensaje original-----
De: maria ahlberg [mailto:mariaahlberg13@hotmail.com]
Enviado el: sábado, 10 de septiembre de 2005 19:33
Para: alt-photo-process-l@sask.usask.ca
Asunto:
I am wondering if there is anyone on the list who uses ammonium bichromate
instead of kalium in gum printing.
Maria Ahlberg Sweden
Received on Sun Sep 11 01:33:12 2005
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