Sorry about that - PE is Ron Mowrey aka Photo Engineer.

The business of making proprietary formulas public is complicated as far as trade secrets go. It's not just the formula but even the compounds themselves that may be proprietary. In that case it might not even help us to know because we wouldn't be able to buy the ingredients anywhere.

A few years back there was a discussion like this regarding Ilford's Cooltone print developer when they discontinued it. People on APUG etc were begging for Ilford to make the formula public and my understanding is Simon Galley even took the proposal to the Ilford/Harman board of directors but in the end they could not disclose the formula because it contained a proprietary chemical.

Interesting stuff.