Vacuoly SMG solder is alloyed in Alpha's proprietary Vaculoy process utilizing materials of the lowest impurity levels available. This provides the basis for it to far exceed the requirements for solder set by J-STD-006 and previous military specification QQS-571F. In addition, Alpha's unique Vaculoy process removes included oxides. Inspection of each lot of material by both chemical analysis and Dross Inclusion Tests guarantees consistency with regard to metallic and non-metallic impurities, including oxides. Melting point of 100sn alloy: 232°C