Nickel 10 Additive is intended as an additive to increase the nickel content of SN100CL lead-free solder. SN100CLe should be used for regular additions to maintain the level of the solder pot.
Solder can be made into many different physical forms including wire, bar, and powder. Solder bar is simply solder in bar form. Florida CirTech uses a casting process in a nitrogen atmosphere to produce bar solder with a very low oxide content.