I read Gadget Gainer's article years ago and I believe I still have the mag in a box downstairs. When ye olde darkroom rats would say the formula for D23 is an ounce of elon and a pound of sodium sulfite in a gallon of water, the sulfite was a coupla hounces heavy. I guess if they used D23 1:1 or 1:3 it didn't matter much. I, however, have used spoon measures for years and get my D23 and DK25R "close enough for gummint work, it seems to me." In several ways, I think D23 is very forgiving of we poor mortals. But I do have scales and I do check every now and then.