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Chlorine

Hanna Instruments HI711 Total Chlorine Checker® HC

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Alkalinity

Hanna Instruments HI755 Marine Alkalinity Checker® HC

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Calcium

Hanna Instruments HI758 Marine Calcium Checker® HC

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Marine Line

Hanna Instruments HI781 Marine Low Range Nitrate Checker HC

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Marine Line

Hanna Instruments HI782 Marine Nitrate High Range Checker HC

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Nitrate

Hanna Instruments HI782 Marine Nitrate High Range Checker HC

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Chemical Oxygen Demand (COD)

Hanna Instruments HI83399 Water & Wastewater Multiparameter (with COD) Photometer and pH meter

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Chlorine

Hanna Instruments HI83414-02 EPA Compliant Benchtop Turbidity and Chlorine Meter

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Chemical Oxygen Demand (COD)

Hanna Instruments HI839800 COD Test Tube Heater

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Controller

Hanna Instruments HI8410 Dissolved Oxygen Controller with Extended Range and Analog Output

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pH

Hanna Instruments HI8424 Portable pH/mV Meter

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Electrical Conductivity (EC)

Hanna Instruments HI8733 Multi-Range EC Meter