α and β Solid Sources
α and β Solid Sources are considered as sealed sources, with an ISO2919 classification of C11111 or higher.
However, precautions must be taken so that the active surface is not in contact with any other material. LEA recommends handling these sources with tweezers to avoid leaving grease on the surface of the source, which would degrade the spectrum and risk contaminating the user.
We recommend storing these sources in their original packaging, away from dust and more generally away from the ambient air. It is therefore not recommended cleaning these sources and scrubbing the active area to check for contamination, to avoid damaging and tearing off part of the active surface.
By respecting these precautions for use, the recommended working life of our alpha and beta sources is 10 years.
