Brewers Best Kickin Apple- low pH

[jackbflyin]

I brewed a lager- with 15 minutes left in the boil I had a pH of 5.25. Then added a 2 lbs. 6 oz. container of Brewers Best Apple Fruit Kicker which lowered pH to 4.15 by the time it was in the fermenter. Such a big drop. Any ideas as to why the Apple extract was so acidic? Is this normal?

 

[MaxStout]

Apple juice is naturally acidic, around pH 3-4, depending on variety.

 

[day_trippr]

If nothing else the low pH makes it harder for bad things to grow...