A protective plastic coating protects a variety of our flat optics, such as optical windows, optical mirrors, and beamsplitters, from scratches during shipping. It can be easily removed prior to use with the quick methods shown in this two minute video. Patrick McKenna, R&D Engineer, demonstrates how to safely and effectively remove the protective plastic coating from a standard N-BK7 window using two methods: Scotch® tape and bamboo tweezers. For additional information, read our Frequently Asked Questions: Optics (https://www.edmundoptics.com/faq-mirrors/).