OK, so 130 without glycin and with less bromide is more or less like Dektol. But Dektol doesn't live too long once diluted, and adding a lot of bromide to it isn't going to extend its useful life (at least I don't think so - please correct me if I'm wrong). So the outstanding keeping properties of the 130 must have something to do with the glycin.
So, either the glycin slows down the decomposition of the metol and/or hydroquinone, or it's active enough to develop on its own even after the metol and hydroquinone have long oxidized. If the latter were true, then the 130 should work more or less normally without any metol or hydroquinone.
Or maybe the glycin can't work normally on its own, but it's so extremely superadditive to metol and hydroquinone that it only requires a slight amount of them to get started. I mean, perhaps it doesn't care if 90% of the metol is oxidized, because the remaining 10% is enough.
I'd really like to know what exactly it is that gives this developer its unusually long life. Any ideas?
Last edited by Vlad Soare; 05-18-2011 at 04:00 AM. Click to view previous post history.