Feb 21, 2016 · Extensive treatment ~ $6.00/1,000 gal. Sterilized for pharmaceutical processes ~ $550/1,000 gal. (Seider pg 608) Demineralized Water. In demineralized water, minerals have been removed by ion exchange. In boiler feed water, this is to prevent salt deposition, corrosion, formation of foam, and sluicing.
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