Pool Chlorine Calculator
- Δ chlorine needed
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- Product needed
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Rough dose calc. Verify with test strips after 6+ hours of circulation. Shock = bring free Cl to ≥10 ppm or 10× combined chlorine.
About this tool
Pool Chlorine Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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