Valterra Blue Devil 6-Way Pro OTO Test Kit | B7550 Swim-Clear C5030 Manifold This high-quality replacement ring ensures

This high-quality replacement ring ensures a secure and effective seal

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preventing pressure buildup and ensuring proper circulation

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Valterra Blue Devil 6-Way Pro OTO Test Kit | B7550 Swim-Clear C5030 Manifold This high-quality replacement ring ensuresValterra Blue Devil 6 Way Pro OTO Test Kit B7550 is a comprehensive water testing solution designed to accurately measure chlorine, bromine, pH, alkalinity, hardness, and cyanuric acid levels in pools and spas. This professional grade kit uses OTO (orthotolidine) testing for quick and precise chlorine and bromine readings, ensuring balanced and properly sanitized water. The easy to use color matching system provides clear results, making routine water