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SIMULATED, NOT MEASURED. Delivered UV-A dose is computed for household SODIS across turbidity and bottle age: at 20 NTU a new bottle delivers 82 Wh/m2 (below the 120 Wh/m2 virus target) and a stated 1.35x reflector restores 122 Wh/m2. A five-person household needs 9 bottles daily and storage is capped at one day after opening. Nothing was built or field-tested.
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William Alexander Aldred (2026) studied this question.
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