POR-15 and White Powder
We get calls all of the time about the white stuff that is left
after the Metal-Ready stage. People follow the instructions for
applying POR-15. They get to the second step - allowing the
Metal-Ready to saturate the surface for at least 20 minutes.
They then rinse the Metal-Ready off with clean water and after
the surface has dried, they have some flash rust and a white
powdery substance left behind. And many called panicked. But
there are no worries. The flash rust happens - POR-15 will
adhere and you will never know. And the white powdery substance
is the zinc phosphate that the Metal-Ready leaves behind. It
aids in the adhesion of the POR-15. Both are good. They mean you
have done well. Pat yourself on the back and continue on with
the POR-15. Check out http://por15store.com