[en] An X-Ray Calibration and Standards Laboratory has been established at the Lawrence Livermore Laboratory to provide x-ray calibrations of various types of x-ray diagnostic equipment presently being utilized. This Laboratory is the outgrowth of many years of involvement in the development of x-ray generation and calibration equipment. X-ray calibrations in a steady state mode are available from 100 eV to 100 keV. Pulsed response and linearity studies as well as radiation damage studies can also be performed. A crystal fabrication, characterization and calibration facility is an integral part of the Laboratory. A general discussion of various equipment and capabilities within the Laboratory is presented