A two step, high capacity alternative to peroxide tin/lead stripping. It is especially formulated for intermittent use in whole panel stripping. It can be used in either spray or soak applications without the worry of laminate attack or “run-away” peroxide reactions. NPS 10 is designed to remove the bulk of the tin/lead deposit safely, while leaving behind a thin intermetallic layer that protects the copper from chemical attack. NPS 20 removes the remaining intermetallic layer left after stripping in NPS 10. It works very quickly, with minimal copper attack, and will last 2-3 times as long as NPS 10.