Homebrew Carnitine, Bubble Layer?

Is it normal for there to be like a bubble layer along the top? If I shake it they disperse and settle back. I filtered and used BAC water. Did maybe not all the powder dissolve yet? Pm me for pics if you wanna see what I mean. Thanks!

If it didn’t fully dissolve then that could cause what you’re describing. Maybe warm the vials and then agitate them for a while to see if they disperse.

I’ll give that a shot, looks like they’ve settled down a bit actually while sitting in refrigeration

Looks like the bubbles went down by like 50% overnight must’ve been it dissolving

Edit: gone now. No more bubbles