We made PE's "A real formula", ammonia at 60C, and it worked very well. We even used food grade pig skin gelatin sheets and self-made silver nitrate (at least 99.9% pure silver dissolved in nitric acid).

We liked the contrast and curve shape. It printed well on normal contrast grade on Kentmere Multigrade paper. I've attached a scan of a print made from 35mm frame of this emulsion. The speed was below ISO 10.


Orangish-red leds fogged our erythrosin-sensitized emulsion. 1 hour from 1 m distance was enough to do it. So, better be too careful than not enough careful. Deep red would probably have been totally safe.Without spectral sensitization this is probably much easier. There might have been also another reasons for fogging (overwashing and higher temperature)