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Description
Coast Spas Purezone P3 cassettes, the refill test cartridges that let a Purezone monitor analyze spa water automatically. A single cassette provides 48 tests and can stay in the water for as long as 60 days. Every test checks pH, total alkalinity, and either free chlorine or total bromine. Keep spares sealed until you are ready to swap them in.
Search: Purezone P3 cassette, Purezone refill, smart spa water test cassette, hot tub water test cartridge
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