Why is blk water basic instead of acidic?

Recently I came across a brand of water called blk, named for the black appearance of the water caused by the addition of fulvic acid. The manufacterer's website states that it is "exceptionally pure artesian spring water" with the addition of the company's blend of fulvic and humic acid. Now, we all know that the PH of pure water is 7, but if we add acid, wouldn't that make it more acidic? Apparently not, seeing as the manufacturer's website also states that the PH of blk water is 9, making blk water more basic than regular water. I would think the fulvic/humic acid's addition would make the PH acidic, not basic. Can anyone explain this?

lemonie6 years ago
Acid is a chemical functionality, humic/fulvic "acids" are poly-functional but the acid functionality is most significant as a name-base due to conventions.
Also pH  is dependent on acid-base equilibria where you've got both in there at the same time (always).

L
Burf6 years ago
Because it is spring water, not pure H2O. Spring water has many different minerals salts dissolved in it depending on the origin of the spring water. That's one of the reasons that spring water tastes better than pure water, which has a flat taste to it. If the water were acidic it would have a sour taste, base would taste bitter (alkaline).
I presume that the water they use has a higher alkalinity than the bottlers like and they add the fulvic acid to lower that alkalinity and improve the taste.