Quick take
RKIN currently recommends RC-QT-RO replacement every 12–24 months as needed, and lists the individual membrane around $82.99.
Correct U1 membrane
RKIN identifies RC-QT-RO as the U1 third-stage 200 GPD reverse-osmosis membrane.
Replacement interval
The manufacturer publishes a 12–24 month schedule depending on water conditions and use.
Current price
RKIN’s current replacement collection lists the membrane at about $82.99.
Performance-based replacement
Track membrane rejection and taste alongside age. Feed-water TDS changes can alter product-water TDS without necessarily meaning the membrane has failed.