https://hha.hitachi-hightech.com/en/support/consumables-coatings-xrf-calibration-standards/foil-sn-pb-(60/40)-350uin-8.8um-10025742
Foil Sn-Pb (60/40%) 350uin 8.8um
Coatings reference standard for creating or validating calibrations on XRF analyzers with spot sizes smaller than 2 mm
foilsnpb