https://doi.org/10.1351/goldbook.UT07492
Region of the electromagnetic spectrum extending from about \(100\ \text{nm}\) to \(400\ \text{nm}\). This region is divided into four sub-bands as follows:
| Vacuum Ultraviolet (VUV) | \(100{-}200\ \text{nm}\) |
| UV-C | \(200{-}280\ \text{nm}\) |
| UV-B | \(280{-}315\ \text{nm}\) |
| UV-A | \(315{-}400\ \text{nm}\). |
Note: The notation and the limits of the various regions are as recommended by the International Commission on Illumination (CIE), with the exception that in these recommendations the UV-C range is \(100{-}280\ \text{nm}\), including thus the vacuum UV range.