Quote Originally Posted by Thomas Bertilsson View Post
Very interesting, Steve. Out of the maybe six or seven kits I got from the Formulary, I never had one that mixed with a close to clear sepia color.

I thought that was normal! Could the fact that bought glycol mixed kits have anything to do with it?
The Glycol shouldn't make any difference, I made some Part A up at double the normal strength in Glycol (to cut the weight when flying) and it makes up and behaves just the same.

Aside from my first batch and the wrong bottles I've found Pyrocat (without Glycol) keeps well, long past suggested storage times others have given in the past.