From Photosensitive.com
Can be mixed with a base of water or triethanolamine
Note: It will take quite a while, and may require the addition of 1-2 ml of water. Dilute with hot propylene glycol to a final volume of 50 ml.
For use, dilute 1+19 with water containing 60 g/L sodium sulfite the resulting solution matches the activity of stock XTOL. To create something like XTOL 1+1, dilute 1+39 with water containing 30 g/L sodium sulfite.
Recipe is per 250ml, phenidone should be mixed to a 2.5% solution in propylene glycol. Use the same times as Xtol, can be used stock or 1:1.
Times treated identical to Xtol
From relistan more discussion at Photrio.com
Heat 80ml of Propylene Glycol to 80C (or so). Add Ascorbic Acid in small amounts while stirring (Note: This can take 15-20 minutes of hand stirring). Add Phenidone and stir / heat until fully dissolved. Top with Propylene Glycol to 100ml.
Dissolve Borax in 800ml of water, top to 1L when fully dissolved.
Mix 1:50 solution A to solution B. For example: For about 300ml of developer mix 6ml of solution A to 300ml of solution B.
Table has been started at Photrio
| Manufacturer | Film Name | Concentration | Speed | Size | Starting Time | Tester | Notes |
| ADOX |HR-50 |1+50 |50 |135 |5 mins @ 20C | | ADOX |HR-50 |1+100 |50 |135 |10 mins @ 20C |Alan Johnson |Highest resolution | | CatLABS |80 |1+50 |80 |Sheet Film |7 mins @ 20C |Andrew O'Neill |rotary in BTZS tubes | | FOMA |Fomapan 200 |1+50 |200 |135 |5.5 mins @ 20C |Karl Matthias | | | Ilford |Delta 100 |1+50 |100 |135 |6.75 mins @ 20C |Karl Matthias | | | Ilford |Delta 3200 |1+50 |1000 |120 |8 mins @ 20C |Andrew O'Neill |30 seconds agitation, then 5s/min | | Ilford |FP4+ |1+50 |125 |135 |7 mins @ 20C |Alan Johnson | | | Ilford |FP4 Cinema Film |1+50 |100 |135 |7 mins @ 20C |Alan Johnson | | | Ilford |FP4 Cinema Film |1+50 |200 |135 |9.7 mins @ 20C |Alan Johnson | | | Ilford |HP5+ |1+50 |400 |135 |6.75 mins @ 20C |Karl Matthias | | | Ilford |HP5+ |1+50 |800 |120 |8 mins @ 20C |Andrew O'Neill | | | Ilford |PanF+ |1+50 |25 |120 |6 mins @ 20C |Andrew O'Neill |5 secs agitation each minute | Kentmere |PAN 100 |1+50 |100 |135/120 |6.75 mins @ 20C |Karl Matthias |Also for Lupus Imaging version of Agfa APX-100, Fotoimpex CHM100 | Kentmere |PAN 400 |1+50 |400 |120 |8.75 mins @ 20C |Karl Matthias | | | Kodak |TMax |1+50 |400 |135 |6.7 mins @ 20C |Alan Johnson | | | Kodak |Tri-X |1+50 |400 |135 |6.75 mins @ 20C |Karl Matthias | | | Lucky |SHD-400 |1+50 |200 |135 |7 mins @ 20C |Alan Johnson | |
From Mark Overton or his article on Photrio, an extra long lasting Xtol clone that keeps as a frozen concentrate.
Mixing the concentrate at 75C add each ingredient one at a time until fully disolved. Should take between 20-25 minutes. Suggestion is to mix in batches and stored in as small a container as possible to avoid oxidation.
Preparing a working solution (1L)
Add water to 1L and and stir until dissolved (about 3.5 min at 20C).
Developement times
| Tri-X | 13.5 | | T-Max 100 | 14 | | T-Max 400 | 13.5 | | Delta 100 | 12.25 | | Delta 400 | 18 | | Delta 3200 | 25 or longer (not recommended due to some speed-loss and long dev-time) | | Pan-F+ | 12.25 | | FP4+ | 16 | | HP5+ | 15 | | Acros | 15 |
G=10g, M=1.5g, A=3.5g, D=.1g -or- P=.05g
Working Solution
Times Here are the few times that I determined:
| Tri-X | 13 | | HP5+ | 14.25 | | Delta 400 | 17.5 | | Neopan 400 | 16.25 |