So i bought some DI Resin from BRS, and since i'm not using a brs RODI system, the DI cartridge only used up about 1/2 of the DI resin that I was given. I doubt that the DI resin will stay for long enough for me to use it a second time, so i figure if anyone else is looking for 1/2 a bag of DI resin, i'd be more then happy to give it to you. If you want/need it just tell me and we'll work something out. I just opened it just now, so shouldn't be a problem to use i'll try to seal it the best i can.