The Pentair GRO75‑RC is a high-performance 75 gallon-per-day reverse osmosis membrane cartridge designed for use in Pentair FreshPoint systems like the GRO‑475 and GRO‑575. This membrane uses advanced GRO™ technology to reduce water waste with an efficient 1:1 product-to-waste ratio — making it an eco-conscious choice for clean, great-tasting water.

Its thin-film composite (TFC) construction offers excellent rejection of total dissolved solids (TDS), heavy metals, PFAS, and other impurities. The click-in design makes installation simple, with a built-in check valve to prevent backflow. This membrane is NSF/ANSI Standard 58 certified, ensuring trusted performance and safety for your drinking water.

✅ Features

• Produces up to 75 gallons per day (GPD) of purified water
  
  
• GRO™ membrane design improves efficiency with a 1:1 product-to-waste ratio
  
  
• Reduces TDS, heavy metals, chlorine, fluoride, PFAS, and other contaminants
  
  
• Spiral-wound TFC construction for high rejection performance
  
  
• Click-in cartridge with double O-ring for easy installation
  
  
• Built-in check valve to prevent backflow and ensure consistent flow
  
  
• Compatible with Pentair FreshPoint GRO-475B and GRO-575B systems
  
  
• Certified to NSF/ANSI Standard 58 for reverse osmosis performance
  
  

🔧 Maintenance

• Replace every 18–24 months, depending on water quality and usage
  
  
• Always replace pre-filters on time to extend membrane life
  
  
• Flush system after installation or if not used for extended periods
  
  

📊 Specs

• Flow rate: 75 GPD (gallons per day)
  
  
• Recovery ratio: 1:1 (approx. 50% efficiency)
  
  
• TDS rejection: Approximately 96%
  
  
• Operating pressure: 40–125 psi
  
  
• Operating temperature: 40°F – 120°F (4°C – 49°C)
  
  
• pH range: 4–11
  
  
• Free chlorine tolerance: Less than 0.1 ppm (requires carbon pre-filtration)
  
  
• Membrane size: Approx. 12″ length × 3–3.5″ diameter
  
  
• Certification: NSF/ANSI 58