I assume the EDTA is there as an antioxidant just like it is used in food as a preservative - check your salad dressing. Anyway, it works fine. I was developing film last night in a JOBO, 8x10 in a print drum, 4x5's in a print drum I had modified with lucite rods as spacers, and 4x5's in the old format holders in a larger drum. 300ml PMK 1-2-100 and 1.5ml 10 percent EDTA. No sweat. Chauncey ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.