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Amplified pH/ORP combination sensor for the YSI 556 handheld, built for high-static environments, very cold water, long cable runs, or long-term field deployments where the connector might see moisture. User-replaceable without tools. Used with: YSI 556 One-year sensor warranty. 556 Manual | 556 Spec Sheet
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🇺🇸 Ship from USA · On Agora since 2026
$599.00