Hanna manufactures the widest range of water treatment products and equipment in the industry. Our product offering includes handheld and in-line process control instrumentation, chemical metering pumps, colorimeters, test kits, reagents and accessories. Our monitoring and control parameters include conductivity, total dissolved solids, resistivity, pH, ORP, dissolved oxygen, temperature, and a variety of specific ions. Applications include reverse osmosis, high purity water, wastewater, boilers & cooling towers, printing, metal finishing and pool & spas. Hanna has been manufacturing quality products and equipment since 1978.


584 Park East Drive
Woonsocket, RI 02895
Phone: 800-426-6287, ext. 31
Fax: 401-765-7500

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