Extra Sources Filter Materials

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KDF 55 — Chlorine & heavy metal reduction (NSF certified)

KDF 55 — Lab test chlorine removal report

KDF 55 — NSF/ANSI Standard 42 certification & product info

Carbon Ball — Chlorine removal by carbon (WC&P Online)

Carbon Ball — EPA & NSF research activated carbon drinking water

Carbon Ball — PubMed study GAC effectiveness

Zeolite Ball — Heavy metal removal (Nature/Scientific Reports)

Zeolite Ball — PubMed review natural zeolite & heavy metals

Zeolite Ball — Household water filter zeolite study

Tourmaline Ball — Far infrared & skin research (NIH/PubMed)

Tourmaline Ball — Far infrared properties in water treatment

Calcium Sulfite Ball — 99% chlorine removal in 0.8 seconds

VC Ball (Vitamin C) — EPA research on ascorbic acid dechlorination

Mineralized Ball — pH balance & trace mineral release study