Why Weak Cation Exchange Deserves a Closer Look Working in the industrial equipment sector for over a decade, I’ve encountered my fair share of ion exchange technologies. Oddly enough, weak cation exchange (WCE) resins don’t always get the spotlight they deserve — yet, they quietly perform some of the most vital jobs, especially in water treatment and chemical processing. If you’re dealing with waters rich in ammonia or organics, or if you need selectivity against certain ions, weak cation exchange often rises as the hero behind the scenes. The charm lies in its reversible acid groups, usually…