Shelf Life (Alumilite Slow)

For shelf life, I'd go by when you opened it and broke the seal. Once it's sealed, it should last a long time as long as you have it in a good stable environment (no extremely high temps or lows). Other than that, once it's opened be sure to keep it tightly capped when you're not using it. Brian holds the record for oldest gallon bottles of resin - I think his are a couple years old by now if memory serves me. So it should last you as long as you need it to without problems as long as you take care. I hope this helps.

I've had some for over a year and part B has turned a pinkish color - is it still good?