I bought Pyrocat-HD in glycol, the large 500ml size to make 10 litres, in October of 2019. Upon receiving it, I immediately decanted both Part A and Part B into clean brown glass 500ml bottles and placed them in a cool dark cupboard. They remained undisturbed until today, March 18/20, after I had finally used up my remaining Xtol. Upon removing the bottles, I noticed that Part A had separated into 2 distinct layers. The upper layer, which occupied about a quarter of the bottle, was completely clear while the lower layer was completely opaque. Is this normal? Has anyone else experienced this separation? Before I shake the bottle to reconstitute the solution and try it out on some test negatives, I would like to know if this will be problematic. Thanks