Trace Element Enrichment Filter, 2″x10″ Ideal as the final stage in any reverse osmosis system, it enriches the water with essential minerals and trace elements such as calcium, magnesium, potassium and sodium while raising the ph. Improves the taste of osmosis water. Operating Pressure: 6 bar (90 psi) Minimum Temperature: 2 °C (35ºF) Maximum Temperature: 45 °C (113 °F) Replaced every 6-12 months, depending on use Certified by: