It is slow, you'll need more exposure than most papers need. It works best with warm tone developers. Kodak Selectol and Selectol-Soft were both warm developers that were GORGEOUS with Ektalure, but they're sadly long discontinued. Don't worry about wasting it, you'll simply have to waste some in order to learn its properties. It was a grade 3 paper, so for normal negs the lower contrast selectol-soft developer was best. As old as it is, it is likely no good anyway, I had some that old a long time ago and it was fogged so I tossed it. This was back when it was still made and someone had given it to me. I had a brand-new box on the shelf at the time so it wasn't a rare thing.