Keep your IsoTwist tasting great—swap filters in minutes
- 1‑year refresh in one kit for IsoTwist 4‑ or 5‑stage RO systems.
- Twist‑off, 1/4‑turn cartridges make service fast and clean—no messy housings.
- Protects taste & performance: sediment + carbon stages; RO membrane sold separately.
Replacement Filter Kit for ISOTwist 4-Stage or 5-Stage Reverse Osmosis Water Purifier
FK-112 annual filter kit for IsoTwist 4-Stage Model annual filter kit includes 1 each of the following;
- Stage 1 - ISOTwist Sediment Filter (TF-4113) - 1/4-turn 5-micron poly-spun cartridge
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Stage 2 - ISOTwist Carbon Block Filter (TF-4115) - 1/4-turn 5-micron carbon block filter
- Stage 4 - ISOTwist Carbon Block Filter (TF-4115) - 1/4-turn 5-micron carbon block filter
FK-113 annual filter kit for IsoTwist 5-Stage Model includes 1 each of the following;
- Stage 1 - ISOTwist Sediment Filter (TF-4113) - 1/4-turn 5-micron poly-spun cartridge
- Stage 2 - ISOTwist Carbon GAC Filter (TF-4114) - 1/4-turn 10-micron granular activated carbon filter
- Stage 3 - ISOTwist Carbon Block Filter (TF-4115) - 1/4-turn 5-micron carbon block filter
- Stage 5 - ISOTwist Carbon Block Filter (TF-4115) - 1/4-turn 5-micron carbon block filter
Replace all filters every 12 months.
> > RO Membrane sold separately and can be found here < <
For use in the 4-Stage and 5-Stage ISOTwist Reverse Osmosis Water Purifier Systems
