Holmium Oxide Glass-Filter for UV-Visible Spectrophotometer

NAC432666-F1 Holmium Oxide Glass-Filter

The light yellow filter marked F1 is a glass doped with holmium oxide (Ho₂O₃). The chemical element holmium shows a series of small absorption peaks in UV and Vis range.

Because the exact positions of the holmium peaks vary slightly for each production batch (movement due to the glass matrix), the filters are calibrated individually.