The Malde-Ware method, otherwise known as Print-Out Platinum-Palladium Printing, or the Ammonium Print-out was invented in the 1980s by Pradip Malde and Dr. Mike Ware. Their method related to the original ‘print-out’ platinum process of Giuseppe Pizzighelli from 1887 and employs a better-behaved iron sensitizer. Ammonium ferric oxalate is substituted for the notoriously unstable ferric oxalate. Further, ammonium salts of platinum and palladium are used rather than potassium salts yielding a higher degree of chemical solubility while also producing more hydroscopic surface when applied. We are authorized by Pradip Malde and Dr. Ware to formulate chemistry with strict adherence to their methods. We have been authorized by Pradip Malde and Dr Mike Ware to sell presensitized mixtures of 50/50 Platinum/Palladium that can be coated onto paper. The chemistry is so stable that it can be used for up to three years. Use straight from the bottle to paper.