BobWicks@aol.com
Date: 01/12/02-11:42:41 AM Z
Dave:
Diazo salts is the most recent application to replace bichromate that I have
heard of. I do think the light sensitivity is slower. It is currently being
used in the silk screen industry and it reacts in the same manner that
bichromates do on amino acid chains. As you may know bichromated salts make
any organic material sensitive to light. Where the light strikes the
emulsion, amino acid chains are formed and they are insoluble. Diazo works
in the same way but is safe to use and to the best of my knowledge it is not
toxic (so the companies say).
Bob
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