When I was dealing with Dimezone S a few years back, I had batches lose activity. Fresh Dimezone S would return prior performance, then seemingly lose activity again. 3 sequences had me feeling pretty confident about the Dimezone link to the behavior. Have others had this happen or was I somehow getting batches at the end of their useful life? I became disenchanted at the time and hadn't returned to it (partly from having some success with concentrates in PG right about then and being told that Dimezone S had its main advantages in water-based mixtures). I recall searching out ways to extend its life but didn't discover anything at the time that seemed to show promise.

I'm open-minded about it but mainly curious about others' experiences that might mirror Mark's recent episode and what I had seen?