Beryllium is also commonly used in some neutron sources in laboratory devices in which relatively few neutrons are needed (rather than having to use a nuclear reactor, or a particle accelerator-powered neutron generator).
Beryllium anvendes også udbredt i nogle neutronkilder i laboratorienheder, hvor der kun er behov for relativt få neutroner (i stedet for at skulle bruge en kernereaktor eller en partikelaccelerator-drevet neutrongenerator).