The highest virgin metals are used to make Kester leaded and lead-free solid core wire. For soldering applications that require maximum reliability of solder joints, especially for surface mounted components, only solder of the highest purity is acceptable. Complete analysis of Kester Solder Wire prove that every batch conforms to the strictest quality control standards in the solder industry. Kester leaded and lead-free solid core solder wire meets IPC J-STD-006C. Kester solder wire purchased directly or through Kester stocking distributors will conform to these requirements.