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2. Culligan - Wikipedia

   en.wikipedia.org/wiki/Culligan

   Emmett perforated the bottom of a coffee can and used greensand to make a water filter. Upon running water through his device, he discovered that the filter acted as a water softener. By 1938, the first Culligan franchised dealership opened in Wheaton, Illinois, followed by another in Hagerstown, Maryland. In 1945, Emmett dissolved the ...

3. History of water filters - Wikipedia

   en.wikipedia.org/wiki/History_of_water_filters

   Water softeners, which use sodium ions to replace water-hardening minerals in water, were first introduced into the water treatment market in 1903. The theory of ion exchange involves replacing undesirable or potentially harmful ions with more desirable or harmless ones. This is implemented in domestic water treatment system as water softeners.

4. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

5. Chrissy Teigen Shares Adorable Photos from Family’s Tropical ...

   www.aol.com/chrissy-teigen-shares-adorable...

   Chrissy Teigen and John Legend's holiday vacation continues! On Friday, Jan. 3, Teigen, 39, shared a carousel of photos and videos on Instagram showing the pair and their four children ...

6. Tennessee still No. 1 as Kansas tumbles in USA TODAY ... - AOL

   www.aol.com/tennessee-still-no-1-kansas...

   Tennessee keeps hold of the No. 1 spot in the USA TODAY Sports men's college basketball poll for the fifth consecutive week. Kansas fell from top 10.

7. How Jimmy Carter Formed an Unlikely Friendship with a ... - AOL

   www.aol.com/jimmy-carter-formed-unlikely...

   Mattie Stepanek first learned about Jimmy Carter when he was just 6 years old. While most kids his age might not be interested in a former U.S. president, Mattie was different. "He said, 'Mommy ...

8. Dealkalization of water - Wikipedia

   en.wikipedia.org/wiki/Dealkalization_of_water

   Chloride cycle dealkalizers operate similar to sodium cycle cation water softeners. Like water softeners, dealkalizers contain ion-exchange resins that are regenerated with a concentrated salt solution - NaCl. In the case of a water softener, the cation exchange resin is exchanging sodium (the Na + ion of NaCl) for hardness minerals such as ...

9. Total dissolved solids - Wikipedia

   en.wikipedia.org/wiki/Total_dissolved_solids

   When measuring water treated with water softeners, high levels of total dissolved solids do not correlate to hard water, as water softeners do not reduce TDS; rather, they replace magnesium and calcium ions, which cause hard water, with an equal charge of sodium or potassium ions, e.g. Ca 2+ ⇌ 2 Na +, leaving overall TDS unchanged [9] or even ...