Pentek Gro Series High-Efficiency Encapsulated Reverse Osmosis Membrane | Pentair
The Pentek GRO Series is a high-efficiency, encapsulated reverse osmosis membrane engineered for Pentair FreshPoint undersink RO systems. Built around TLC (Thin Layer Composite) membrane technology with a 100% dry membrane core, the GRO Series maximizes shelf life while delivering high rejection stability - even at elevated input TDS levels.
What sets the GRO Series apart is its double-the-recovery design: it achieves a 1:1 purified-to-wastewater ratio, roughly twice the efficiency of standard RO membranes, significantly reducing water waste while maintaining rejection performance comparable to conventional elements. Each membrane includes a built-in permeate check valve and matched drain line flow control for streamlined installation and correct system pressure - critical since drain line flow restrictors must match the membrane's capacity rating for proper RO system performance.
The GRO Series is NSF International tested and certified, and its encapsulated, retrofit-friendly design makes replacement straightforward in compatible FreshPoint systems.
Key Features:
- High-efficiency TLC (Thin Layer Composite) encapsulated RO membrane
- 1:1 purified-to-wastewater ratio - double the recovery of standard RO elements
- 100% dry membrane construction maximizes shelf life
- High rejection stability at high input TDS
- Built-in permeate check valve and drain line flow control included
- NSF International tested and certified
- Encapsulated, retrofit-able design for easy replacement
- Available in multiple GPD capacities to match system requirements (GRO-36EN, GRO-50EN, GRO-75EN)
Specifications:
Brand: Pentair
Product Line: Pentek GRO Series (FreshPoint compatible)
Membrane Type: TLC Thin Layer Composite, encapsulated
Recovery Design: 1:1 (double recovery vs. standard RO elements)
Available Capacities: 36 GPD, 50 GPD, 75 GPD
Nominal Rejection: 96%
Included Components: Permeate check valve, drain line flow control (rate matched to GPD model)
Certification: NSF International tested and certified
Recommended Replacement: Every 18 months
Compatible Systems: Pentair FreshPoint GRO-series reverse osmosis systems
