<p>HC-110, Kodak Indicator Stop Bath (liquid stop), Kodafix (liquid fix w/ hardener), PermaWash (liquid HCA) and Kodak Photo-Flo 200 (liquid used to minimize water marks and streaks as film dries). These are the same chems I used when developing bulk loaded Panatomic X in the 60's. The Covington site already mentioned is a must read especially the section on extending developing times. I have tried to keep my developing times around 10 minutes by varying the dilution of the developer of choice. Much easier to control the process at 10 min. as opposed to the 3 1/2 possible with certain HC-110 dilutions.</p>