Is it normal that scrap parts will increase immediately after the first test of a highly effective specialized purge compound?

Yes, this typically happens when a heavily contaminated machine is purged with a specialized purging compound, especially when the machine has a lot of carbon residue trapped in it. The specialized purge compound will loosen colors used in previous production runs as well as carbon buildup that has been stuck inside the machine. Frequent use of a specialized purging compound will drastically clean the machine and reduce the scrap rate. The benefits of the specialized purging compound will quickly become apparent.