Are you talking about a screen-printing kit Ron? I think that the Speedball Diazo sensitizer didn't work for Greg.
Do you think Bud at the Formulary could get a hold of 4,4'-DIAZIDOSTILBENE-2,2'-DISULFONIC ACID DISODIUM SALT, CAS: 2718-90-3?
I was (selectively) recalling was a comment from Mssr. Berger about using H#3 at a similar concentration to the dichromates.
To incorporate hardener #3 into a gelatin emulsion, 1.5 g/250 ml is a good place to start.
Charles
Ok, received word back from the aforementioned supplier.
I'm told they can supply it at $180/kg. That comes out to 18¢/gram!!
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