RS-6040 Resist Stripper is an aqueous solution formulated to strip aqueous dry film photo-resist and alkaline soluble screen printing inks. RS-6040 contains copper brightening agents for a uniform clean copper appearance. RS-6040 has excellent stripping capacity and a rapid strip rate for high-speed horizontal applications. RS-6040 can also be used in a batch mode. There are anti-tarnish additives that inhibit copper attack to facilitate A.O.I inspection. As RS-6040 becomes saturated with resist, it may become necessary to add a suitable defoamer such as BB-200.