Hanna ORP solutions include ORP test solutions for verifying sensor performance along with storage and pretreatment solutions. Pretreatment solutions include both reducing and oxidizing pretreatment to condition the probe and increase response time. Hanna solutions have the lot number and expiration date clearly marked on the label and is air tight with a tamper-proof seal to ensure the quality of the solution. Other solutions include storage and probe refill solutions.

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