"William Frazier" wrote:

I agree with Clyde that the 14.2 acid value is 14.2 grams acid per 1000 ml
of juice. Same as 1.42% TA.

I've been going crazy (short trip that it is) trying to figure out why 14.2
grams per liter (1000 ml) is 1.42% TA, or more precisely what the percentage
actually represents. I finally did so, and thought I would share it with the
group, in case someone else is still scratching their head and tearing their
hair out.

The "% TA" value designates "grams per milliliter (expressed as a
percentage)".

So, grams per liter (expressed as a fraction) divided by 1000 = grams per
milliliter (expressed as a fraction), and grams per milliliter (expressed as
a fraction) x 100 = grams per milliliter (expressed as a percentage)!

Since 1/1000 x 100 = 1/10, we can convert grams per liter to % TA by
dividing by 10.

I hope this wasn't obvious to everyone but me.