Nutz has the right idea, you want to put it in hot water.
Put a pot of water on the stove with a thermometer in it, and heat up the pot. It's a stab in the dark, but I would say about 50 degrees celsius (which is about 120 fahrenheit) should do the trick.
Let the vial heat up for a few minutes, then take it out and shake it around a bit to try and loosen those particles up.