We offer Hollow Cathode lamps from both Heraeus Noblelight and Hamamatsu. By offering both product lines, our customers can decide which lamp design and materials will work best in their applications.
The most common variation is the envelop glass. The envelope material will affect spectral transmittance, primarily varying in the UV region.
Another typical variation is the fill gas, which will affect the background spectral radiation. This can usually be modified at customer request, but the manufacturer's standard fill gas is listed.
| Element | Symbol | Principal Wavelength (nm) | Hamamatsu (38mm) | Fill Gas | Window | Heraeus (37mm) | Heraeus (50mm) | Fill Gas | Window |
| Silver | Ag | 328.1 | L233-47NB | Neon | Borosilicate | 3UAX/Ag | 5UA/Ag | Argon | UV glass |
| Aluminum | Al | 309.3 | L233-13NB | Neon | Borosilicate | 3UNX/Al | 5UN/Al | Neon | UV glass |
| Arsenic | As | 193.7 | L233-33NQ | Neon | Quartz | 3QNY/As | 5QN/As | Neon | Quartz |
| Gold | Au | 242.8 | L233-79NQ | Neon | Quartz | 3UNX/Au | 5UN/Au | Neon | UV glass |
| Boron | B | 249.8 | L233-5NQ | Neon | Quartz | 3UNX/B | 5UN/B | Neon | UV glass |
| Barium | Ba | 553.5 | L233-56NB | Neon | Borosilicate | 3BAX/Ba | 5BA/Ba | Argon | Borosilicate |
| Beryllium | Be | 234.9 | L233-4NQ | Neon | Quartz | 3QNY/Be | 5QN/Be | Neon | Quartz |
| Bismuth | Bi | 223.1 | L233-83NQ | Neon | Quartz | 3QNY/Bi | 5QN/Bi | Neon | Quartz |
| Calcium | Ca | 422.7 | L233-20NU | Neon | UV glass | 3UNX/Ca | 5UN/Ca | Neon | UV glass |
| Cadmium | Cd | 228.8 | L233-48NQ | Neon | Quartz | 3QNY/Cd | 5QN/Cd | Neon | Quartz |
| Cerium | Ce | 520 | n/a | 3UNX/Ce | 5UN/Ce | Neon | UV glass | ||
| Cobalt | Co | 240.7 | L233-27NU | Neon | UV glass | 3UNX/Co | 5UN/Co | Neon | UV glass |
| Chromium | Cr | 357.9 | L233-24NB | Neon | Borosilicate | 3UNX/Cr | 5UN/Cr | Neon | UV glass |
| Cesium | Cs | 852.1 | L233-55NB | Neon | Borosilicate | 3BNX/Cs | 5BN/Cs | Neon | Borosilicate |
| Copper | Cu | 324.8 | L233-29NB | Neon | Borosilicate | 3UNX/Cu | 5UN/Cu | Neon | UV glass |
| Deuterium | D2 | 240 | L233-1DQ | Deuterium | Quartz | n/a | n/a | ||
| Dysprosium | Dy | 421.2 | L233-66NB | Neon | Borosilicate | 3BNX/Dy | 5BN/Dy | Neon | Borosilicate |
| Erbium | Er | 400.8 | L233-68NB | Neon | Borosilicate | 3BNX/Er | 5BN/Er | Neon | Borosilicate |
| Europium | Eu | 459.4 | L233-63NB | Neon | Borosilicate | 3BAX/Eu | 5BA/Eu | Argon | Borosilicate |
| Iron | Fe | 248.3 | L233-26NU | Neon | UV glass | 3UNX/Fe | 5UN/Fe | Neon | UV glass |
| Gallium | Ga | 287.4 | L233-31NU | Neon | UV glass | 3UNX/Ga | 5UN/Ga | Neon | UV glass |
| Gadolinium | Gd | 368.4 | L233-64NB | Neon | Borosilicate | 3UNX/Gd | 5UN/Gd | Neon | UV glass |
| Germanium | Ge | 265.2 | L233-32NU | Neon | UV glass | 3UNX/Ge | 5UN/Ge | Neon | UV glass |
| Hafnium | Hf | 307.3 | L233-72NU | Neon | UV glass | 3UAX/Hf | 5UN/Hf | Argon | UV glass |
| Mercury | Hg | 253.6 | L233-80NU | Neon | UV glass | 3UNX/Hg | 5UN/Hg | Neon | UV glass |
| Holmium | Ho | 410.4 | L233-67NB | Neon | Borosilicate | 3BNX/Ho | 5BN/Ho | Neon | Borosilicate |
| Indium | In | 303.9 | L233-49NB | Neon | Borosilicate | 3UNX/In | 5UN/In | Neon | UV glass |
| Iridium | Ir | 208.9 | L233-77NQ | Neon | Quartz | 3QNY/Ir | 5QN/Ir | Neon | Quartz |
| Potassium | K | 766.5 | L233-19NB | Neon | Borosilicate | 3BNX/K | 5BN/K | Neon | Borosilicate |
| Lanthanum | La | 550.1 | L233-57NB | Neon | Borosilicate | 3UAX/La | 5UA/La | Argon | UV glass |
| Lithium | Li | 670.8 | L233-3NB | Neon | Borosilicate | 3BAX/Li | 5BA/Li | Argon | Borosilicate |
| Lutetium | Lu | 336 | L233-71NB | Neon | Borosilicate | 3UAX/Lu | 5UA/Lu | Argon | UV glass |
| Magnesium | Mg | 285.2 | L233-12NU | Neon | UV glass | 3QNY/Mg | 5QN/Mg | Neon | Quartz |
| Manganese | Mn | 279.5 | L233-25NU | Neon | UV glass | 3UNX/Mn | 5UN/Mn | Neon | UV glass |
| Molybdenum | Mo | 313.3 | L233-42NB | Neon | Borosilicate | 3UNX/Mo | 5UN/Mo | Neon | UV glass |
| Sodium | Na | 589 | L233-11NB | Neon | Borosilicate | 3UNX/Na | 5UN/Na | Neon | UV glass |
| Niobium | Nb | 334.4 | L233-41NB | Neon | Borosilicate | 3UAX/Nb | 5UA/Nb | Argon | UV glass |
| Neodymium | Nd | 492.5 | L233-60NB | Neon | Borosilicate | 3BNX/Nd | 5BN/Nd | Neon | Borosilicate |
| Nickel | Ni | 232 | L233-28NQ | Neon | Quartz | 3QNY/Ni | 5QN/Ni | Neon | Quartz |
| Osmium | Os | 290.9 | L233-76NU | Neon | UV glass | 3UNX/Os | 5UN/Os | Neon | UV glass |
| Phosphorous | P | 213.6 | n/a | 3QNY/P | 5QN/P | Neon | Quartz | ||
| Lead | Pb | 217 | L233-82NQ | Neon | Quartz | 3QNY/Pb | 5QN/Pb | Neon | Quartz |
| Palladium | Pd | 247.6 | L233-46NQ | Neon | Quartz | 3UNX/Pd | 5UN/Pd | Neon | UV glass |
| Praseodymium | Pr | 495.1 | L233-59NB | Neon | Borosilicate | 3BNX/Pr | 5BN/Pr | Neon | Borosilicate |
| Platinum | Pt | 265.9 | L233-78NU | Neon | UV glass | 3UNX/Pt | n/a | Neon | UV glass |
| Rubidium | Rb | 780 | L233-37NB | Neon | Borosilicate | 3BNX/Rb | 5BN/Rb | Neon | Borosilicate |
| Rhenium | Re | 346.1 | L233-75NB | Neon | Borosilicate | 3UAX/Re | 5UA/Re | Argon | UV glass |
| Rhodium | Rh | 343.5 | L233-45NB | Neon | Borosilicate | 3UAX/Rh | 5UA/Rh | Argon | UV glass |
| Ruthenium | Ru | 349.9 | L233-44NB | Neon | Borosilicate | 3UNX/Ru | 5UN/Ru | Neon | UV glass |
| Antimony | Sb | 217.6 | L233-51NQ | Neon | Quartz | 3QNY/Sb | 5QN/Sb | Neon | Quartz |
| Scandium | Sc | 391.2 | L233-21NB | Neon | Borosilicate | 3UNX/Sc | 5UN/Sc | Neon | UV glass |
| Selenium | Se | 196 | L233-34NQ | Neon | Quartz | 3QNY/Se | 5QN/Se | Neon | Quartz |
| Silicon | Si | 251.6 | L233-14NU | Neon | UV glass | 3QNY/Si | 5QN/Si | Neon | Quartz |
| Samarium | Sm | 429.7 | L233-62NB | Neon | Borosilicate | 3UNX/Sm | 5UN/Sm | Neon | UV glass |
| Tin | Sn | 224.6 | L233-50NQ | Neon | Quartz | 3QNY/Sn | 5QN/Sn | Neon | Quartz |
| Strontium | Sr | 460.7 | L233-38NB | Neon | Borosilicate | 3BAX/Sr | 5BA/Sr | Argon | Borosilicate |
| Tantalum | Ta | 271.5 | L233-73NU | Neon | UV glass | 3UNX/Ta | 5UN/Ta | Neon | UV glass |
| Terbium | Tb | 432.7 | L233-65NB | Neon | Borosilicate | 3BNX/Tb | 5BN/Tb | Neon | Borosilicate |
| Tellurium | Te | 214.3 | L233-52NQ | Neon | Quartz | 3QNY/Te | 5QN/Te | Neon | Quartz |
| Thorium | Th | 371.9 | n/a | 3UNX/Th | 5UN/Th | Neon | UV glass | ||
| Titanium | Ti | 365.4 | L233-22NB | Neon | Borosilicate | 3UNX/Ti | 5UN/Ti | Neon | UV glass |
| Thallium | Tl | 276.8 | L233-81NU | Neon | UV glass | 3UNX/Tl | 5UN/Tl | Neon | UV glass |
| Thulium | Tm | 371.8 | L233-69NB | Neon | Borosilicate | 3UNX/Tm | 5UN/Tm | Neon | UV glass |
| Uranium | U | 358.5 | n/a | 3UAX/U | 5UA/U | Argon | UV glass | ||
| Vanadium | V | 318.5 | L233-23NB | Neon | Borosilicate | 3UNX/V | 5UN/V | Neon | UV glass |
| Tungsten | W | 255.1 | L233-74NU | Neon | UV glass | 3UNX/W | 5UN/W | Neon | UV glass |
| Ytterbium | Y | 410.2 | L233-70NB | Neon | Borosilicate | 3UNX/Yb | 5UN/Yb | Neon | UV glass |
| Yttrium | Yb | 398.8 | L233-39NB | Neon | Borosilicate | 3BNX/Y | 5UN/Yb | Neon | UV glass |
| Zinc | Zn | 213.9 | L233-30NQ | Neon | Quartz | 3QNY/Zn | 5QN/Zn | Neon | Quartz |
| Zirconium | Zr | 360.1 | L233-40NB | Neon | Borosilicate | 3UNX/Zr | 5UN/Zr | Neon | UV glass |
