Schott N-WG280

The 280nm cut-on is sharp and exactly what I needed for my fluorescence setup. Arrived well-packed and the surface finish looks clean under inspection.

The 2mm thickness is exactly as specified, and the cut-on behavior at 280nm has been consistent across multiple test runs. I swapped it into my spectroscopy setup and the transmission curve matches the datasheet perfectly.

Installed this 2mm filter in my optical setup and the 280nm longpass cut-on is exactly where I needed it. The glass is clear with no visible striae or defects, which matters for my spectroscopy work.