Poly/Dyne Test Pens are quick and convenient to use to determine treatment level between 38 to 40 dyne. This unique pen is easy to read. When the level of the substrate is below 38 dyne/cm the ink is not visible, greatly improving operator accuracy. This fast, easy to read pen is ideal in production situations for quickly determining if treatment is present. The Poly/Dyne Test Pen is available in Blue
