Always consult your on-site Laser Safety Officer (LSO) for specific guidance. Required optical density (OD) and laser safety personal protective equipment (PPE) are determined based on worst-case scenarios and require professional judgment. All laser safety equipment provided is intended for diffused beam viewing only.
For blocking UV light in the 400-410nm wavelength range, we recommend using our 408 window, which provides an Optical Density (OD) of 5+ @ 190-420nm. You can find more details here: 408 Acrylic Window.