europium-doped strontium borate (SrB 4 O 7 :Eu 2+ ) while the phosphor used to produce a peak at around 350&ndash;353&nbsp;nm is lead -doped barium silicate (BaSi 2 O 5 :Pb + ). "Blacklight Blue" lamps peak at 365&nbsp;nm. Manufacturers use different numbering systems for black light, UVA, UVB and Actinic