In London, the big problem was that one professional lab had the rights to process it. When they went under, another lab took it over and I'm not sure if they are still going. Don't think so. I believe Scala was a negative BW film that had been formulated specifically for a reversal process. I was asked a few years ago to test it with a normal BW reversal kit, (I think it was Tetenal), and it worked fine, so if these kits are still available, Scala can still be processed for tranny. Or, I'm sure the formulae are easy to find for the bleach and 2nd development. In normal developer, it was really good film, though I think it may be best to rate it at 100 ISO, though tests will determine it's true (negative) speed.