American Crafts pH Tester Pen

This American Crafts pH Pen is a specially formulated solution that allows you to test the level of acidity in paper products.

Draw a short line in an inconspicuous part of the paper. Blue or lavender ink color indicated a desirable acidity level; yellow or colorless ink indicated an undesirable level. No more guessing if a product is appropriate to add to your scrapbook projects!