Technical support before and after purchase—from selecting the correct dyne levels to interpreting test results and replacing individual pens.The Accu Dyne Test Pens 30–52 Dynes Core Range Set is designed for routine surface energy verification on untreated and lightly treated films and plastics. Manufactured with 100% reagent-grade solutions, this 12-unit kit provides fast, reliable adhesion testing for printing, coating, and laminating operations.