Baselayr Long Lasting Diazo is the required sensitizer for activating Baselayr Long Lasting Emulsion and converting it into a durable dual cure stencil system. Each container of Baselayr Long Lasting Emulsion already includes a bottle of diazo, so this product should only be purchased if your original diazo has been damaged, misplaced, or needs replacement. When properly mixed, it enhances stencil strength, improves mesh adhesion, and ensures reliable curing performance, making it essential for achieving consistent, long lasting results in your screen printing workflow.