I recently changed my DI resin, due to the TDS and color change. After I refilled my cartridge (Certain brand, doesn't matter. Has been stored in the original packaging inside a Tupperware container with saran wrap as a barrier, for about 1 1/2 years). Anyway, when I recharged the system my TDS was 200! And after running about 1 and a half buckets through it, it still was 140'ish. I went to my LFS and purchased new DI resin and once replaced, it only took about two gallons to get 000 TDS. So, does Di resin go bad? And if so, is there a way to clean It / flush it for use or just toss it. Have about two gallon's worth of the old. Or are there better ways to store bulk? Thanks!