Following recent strange blobs on my negs, in addition to the detective work necessary to resolve that problem (see thread here - Emulsion defect? ), I have decided to give Rodinal a go (more specifically, Tetenal’s Paranol S). I’m wondering how people generally measure the small volumes of developer to any accuracy, and assume that most people must use a pipette, when dealing with 1:50 or dilutions beyond that. I’m not interested in doing stand development at homeopathic dilutions, so would probably use the 1+25 or 1+50 dilutions, which gives between 10 and 20ml of developer per shot, at my normal 500ml tank volume. I thought I could weigh it instead, as I have a balance which will do to the nearest 10th of a mg, and I’ve found the density from a COSSH datasheet sourced online (1.386 for anyone that is interested). Anyone else do this, or can think of any reason this wouldn’t be a good idea? I have assumed the acceleration due to gravity in SE England is close enough to 9.81 to not worry about, and that any variations in density due to ambient temperature can be ignored (that’s a joke, for fear of starting a whole new topic)! I'll be using mostly Kentmere 100 and FP4 in 35mm and FP4 or HP5 in MF, so any advice on these combo's greatfully received.