Maybe if you have all metal piping, you could put this in after the chiller to see the sort coin through. Or if you have an online oxygenator, you can see the bubbles.
Up Next: Blonde Ale, German Pils
Primary: Pumpkin Spice Latte Stout
Kegged: Galaxy Dry Hopped Fort Point clone, Blonde Ale
Bottled: S'mores Stout, Blonde Ale