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Reef Essential® Signature Series™ / Rubidium
Signature Series™ · Single-Element Precision
Rubidium — for when your ICP test says you're low.
Ultra-pure, ICP-OES tested rubidium on its own — for closing a gap your water test just flagged, not for routine blanket dosing.
ICP-OES tested every batch Alkali Metal Target 0.03–0.05 ppm
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