I regularly mix a simple B&W film developer using 1g metol, 3g HQ, only 6g sulfite and 1g carbonate, mono. This does the job well. I ALWAYS use it 'one shot' at a rather high dilution (hence, the carbonate). Doing this, I never experience changes in energy due to the passage of time, even after six months or more (I store in PET plastic, filled to the rim, thus I get away with using such a small amount of sulfite, as this plastic does not 'breathe').
Should there be a buffer included in my formula? Or is the buffer primarily for a replenishment system? Again, I experience no problems but just want more light on the purpose and function of buffer as relates to proper pH maintenance. - David Lyga