Thanks for that. I'll make a techno-guess and say that whatever oxygenating took place with shaking, it was far less degradation than just plain old age, sitting around at room temperature. Or, possibly, just waiting a day w/o shaking and the components would redisolve. OTOH, there was that Shutterbug article I mentioned and he apparently froze and thawed as he needed. A YMMV moment?
Originally Posted by RPC
If one doesn't want/can't do freezing, even refrigeration would give a big leg up on longevity.