Ever since the discontinuation of Microdol-X developer, which I always favored 1:3, I've been using this homemade stuff from ebay ingredients that has seemed to work as far as actually obtaining a printable negative. The best formula my computer research has led me to is supposedly pre-Microdol-X. 5g metol, 100g sulfite, 30g kosher salt. for 1L of water. The true formula of Microdol-X is in the graves of the chemists. So be it. Although I question the "grainlessness" of this formula I've been using. Back in the 70's I could shoot Tri-X 35mm and Kodak Microdol-X 1:3 at 400 ASA, and got full speed and grainless negatives. An 8x10 would look perfect. Now it seems like a 5x7 is as grainy as you would expect from most any other "moderately fine grain" Kodak developer like D-76. It seems D-23 was always about the same grain as D-76. And since D-23 is the same formula with 2.5g more metol, and no NaCL, I wonder what the heck I'm doing. Does the salt really do anything, or is this a fools errand? Has anybody out there tried my homemade Microdol?