Definitions for "PH Testing Pen"
Keywords:  pen, scrapbook, discolours, handy, dye
pen containing an indicator dye that when applied to a surface of a material discolours to show the surface's ph level
A pen used to test the acidity of paper or other Scrapbooking materials.
a handy tool to have around for whenever you are thinking about using an item in your scrapbook that you are not sure is acid-free