IPW Industries Inc W-525 Replacement Water Filters 5 pc

Five-stage replacement filter kit

This five-piece set replaces every cartridge in a standard five-stage reverse-osmosis system. It contains two 5-micron coconut-shell carbon blocks, one 5-micron polypropylene sediment filter, one 50 GPD membrane and one 10-inch granular activated carbon post-filter with 3/8-inch quick-connect fittings. The kit matches the Watts W-525 configuration and fits several other common RO models.

Twist-in cartridges with quick-connect post-filter

Each stage uses a standard twist-lock housing so no tools are required for the sediment, carbon block or membrane cartridges. The final polishing filter ships with 3/8-inch push-to-connect fittings that snap onto existing tubing. The most common issue is forgetting to flush the new carbon blocks until the water runs clear, which can leave fine particles in the first few litres.

50 GPD membrane rating decides daily output

The included thin-film composite membrane is rated at 50 gallons per day under standard test conditions. If your household uses significantly more purified water than that, the tank will refill slowly and you may notice reduced flow at the tap. Buyers who need higher daily production should choose a system designed for a larger membrane.