Amazon offering a deal on Hofun TDS Meter Digital Water Hardness Tester. Apply a coupon code KEOHJ539
to get it for $8.97. Shipping is free w/Prime or on orders of $25 or more.
Hofun TDS Water Quality Test Meter performs as a guard who helps monitor water quality to tell you whether the water meets standards of drinking, so that you have a clear mind of water status and take measures to guard water safety for your family.
TDS = Total Dissolved Solids, which are the inorganic salts and organic matter in liquid. The lower the TDS level, the purer the water is. Conversely, higher TDS level indicates more particles dissolved in liquid.
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