: My latest batch of System 3, via Pygmy, has a very definite dark, purple
: color in the part B hardener, vs.the golden honey of previous ones. Pygmy
: says no problem, S3 says "color does not affect properties, and sure
: enough, it seems to set fine, and at least a single coat on a test panel
: doesn't have any noticeable color. Still, I'm curious- any one else seen
: this? Unmixed, it looks like the color of grape jelly, and mixed, kind of
: dirty, but spread out, looks fine. I'm a little concerned about a possible
: color once I build up several fill coats.

Rod,

I purchased some System Three medium hardener last fall that was much darker than hardener I purchased the previous spring. Mine didn't really have a purple tint to it though. I mixed and matched the two hardeners on my King and don't notice any difference in color in the cure epoxy.

Chris