[Xss3]

The spec doesn't tell you intent it tells you the resulting product performance.

Ph change is one part of the result, not the goal. The goal is water purification.

[tguvot]

i am talking here about post-filters for PH adjustment. their goal is PH adjustments

those for example https://www.freshwatersystems.com/collections/specialty-cart...

or those https://www.freshwatersystems.com/collections/filters-media?...