> From "The Epoxy Book" by System Three Resins: Haziness and
> crystallization will occur if stored at cold temperatures (below 50 F.)
> for prolonged periods. Immersing the closed container in hot tap water and
> heating to 120 F. or above will bring the resin back to a clear state.
> NEITHER CRYSTALLIZATION NOR HEATING WILL ADVERSELY AFFECT THE PRODUCT.
> (Emphasis mine) Other manufacturers say the same, because it's true.

> Toss it if you feel you must, but it's a waste of good material.

Pete, I agree with you. I use System Three and store my epoxy in a cool basement. When my first batch of resin arrived in the winter it was crystallized and I had to do the hot water bath to bring it back to liquid, I left pumps in the plastic jugs for a year and the resin crystallized in the pumps so I used a heat gun to liquify the resin. I then pumped acetone thru the pumps and checked calibration, just like new! I read somewhere that the best quality resins are the ones that crystallize. Some people make a box with a light bulb burning all the time to prevent this from happening if resin is stored in cold.

Larry C.