Despite most AgTalk non-liquid users dislike of the product, the liquid that Weedman links seems to work very well....here.

3 qts/per acre with Liberty. 3 qts = 3 lbs dry AMS. Used it in corn herbicide also. 

"Aqua AMS" was the product we used. It worked, it seems. We have dead weeds. If dry worked better, I assume we'd still have dead weeds? About $1.70 per acre. Stored in a tank outside. Pumps easily. Measure with a flow meter or tank markings.

Since we started using AMS 40 yrs or so ago, we have mainly used dry spray grade. Then a few yrs back we made our own liquid with (scaled it for accuracy) and spray grade dry ams. Then 2 yrs ago started using the Aqua AMS product. It appears at this point that in 2025 we'll be using Aqua AMS again.