Get 20% off select Pro DI Canisters and the Reverse Osmosis Plus System. Discount applied automatically at checkout. Offer may not be combined with other promotions. Valid for a limited time.

Receive a free reagent when you purchase any Marine Checker Colorimeter from Hanna Instruments. Limited time only, while supplies last. Applies to eligible products only. Valid for a limited time, while supplies last. Terms and conditions apply.