Compact under-sink iron filter cartridge uses KDF-85 and catalytic carbon to reduce iron

https://www.softprowatersystems.com/pages/why-tds-meter-reading-could-be-lying-about-iron-contamination

Compact under-sink iron filter cartridge uses KDF-85 and catalytic carbon to reduce iron and rotten egg smell; quick-change housing, 3/8-inch push-connect fittings, and 0.5 micron rating integrate with ice makers and espresso machines.