I am dabbling in research on the topic of the rediscovery of the Ticheiles dye. Of course, one of the historic attempts at a potential Chilazon was discovered by the Radzyner Rebbe (Rav Gershon Henoch Leiner). He identified the Cuttlefish as a potential candidate. For the most part, this theory has been rejected. One reason given for this is that the source of the blueness of the dye is truly a chemical in the dye solution, not the dye itself.
Therefore, in order to complete my analysis of the Radzyner's dye, I need to know precisely what the dye process was. Does anyone know or have any Mekoros for finding out?