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HM Digital, Inc.

Total Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm). TDS is directly related to the purity of water and the quality of water purification systems and affects everything that consumes, lives in, or uses water, whether organic or inorganic, whether for better or for worse.
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HM Digital Pocket-Sized TDS Meter w/ Thermometer
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$22.49
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HM Digital Handheld TDS Meter w/ Thermometer
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$24.99
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HM Digital pH Electrode Storage Solution
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$8.99
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HM Digital pH Buffer Solution
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$10.99
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HM Digital PH-80 Handheld Digital pH Meter
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$49.99
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HM Digital pH-200 Waterproof pH Meter
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$79.99
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HM Digital Waterproof EC / TDS / Temp Combo Meter
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$66.99
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