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Give it purpose - fill it with water filters, air filters, refrigerator filters, and more.
The HM PH-200 Waterproof pH Meter is a highly accurate, professional-grade digital pH and temperature meter. Incredibly accurate, the PH200 is perfect for both consumer and commercial use.
The pH-200 Features:
The HM PH200 can be used for pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools, spas, ecology testing, boilers and cooling towers, water treatment, wine or coffee applications, agriculture and more.