ZeroWater ZD-013 Filtration Pitcher with Electronic Tester for $23.99 Shipped
ZeroWater ZD-013 Filtration Pitcher with Electronic Tester for $23.99 shipped. Here is a screenshot for your reference. It comes with a TDS Meter to check that ZeroWater filter cartridges are working properly as well as to let you know when to replace the filters. Most places have it for about $30.
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