Jet-Dry info here!
I just had to check it out. I picked up a bottle of the blue stuff (liquid) at a dollar store.
Last weekend, I was running another flow test with my airtrap. I found the source of the tiny bubbles: it was from a vortex forming because I didn't put enough water in the airtrap.
I thought the Jet-Dry would help clear it up (don't ask!). I also wanted to get around the white deposit on my tubes (and using Lysol wasn't a favorite of mine).
So I added
two drops of Jet-Dry in a gallon jug, which I filled with water, and poured in my test rig. I had a tiny bit of foam (in the jug).
When I turned the pump on, everything cleared up. Upon closer examination, the tiny air bubbles became
very small air bubbles (had to hold a flashlight through the clear part). They're still there, but they don't make that noise at the pump anymore.
Here's a pic of the test rig (a preview from the article!):
(Note: that was the test from a few weeks ago, which had leaks!)