Geekpure Universal 5-Stage RO Replacement Filter Kit with 75 GPD Membrane — Refresh the Whole System! $62.98 CAD (21% Off)

Amazon.ca is currently offering the Geekpure universal 5-stage RO replacement filter kit (5-pack) for $62.98 CAD (list $79.99, 21% off). Free shipping for Prime members; orders over $35 ship free otherwise.

If you have an under-sink reverse-osmosis system, you're on a 6-to-24-month filter clock. This kit covers one full change: a PP sediment cartridge, a granular activated carbon cartridge, a carbon block cartridge, a 75 GPD RO membrane and a post inline coconut carbon cartridge, plus two 1/4-inch quick fittings and a roll of Teflon tape.

Everything is industry-standard sizing — the three pre-filters are 2.5 x 10 inches, the membrane 1.8 x 12 inches and the post carbon 2 x 10 inches — so it fits most standard under-sink RO systems (iSpring, Watts, Premier, Flowmatic, PuROLine, Crystal Quest, Apec and more). Measure your own cartridges first to be sure.

Geekpure says the membrane rejects up to 99% of contaminants including arsenic, lead, fluoride and heavy metals. The manufacturer is ISO 9001 certified and a Water Quality Association member, and every cartridge is individually sealed for shelf life. Buying the set beats sourcing each stage on its own — and with decent source water it'll last you a good while.

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