The High Resolution Dynamics Limb Sounder (HIRDLS) mission has particularly demanding scientific goals which represent especially challenging engineering technologies, assembly and calibration strategies. These goals include the measurement of various atmospheric species and associated geophysical parameters that have spatial resolutions and absolute accuracies that are at the same time commensurate with the resolution of current global general circulation models and with the observed fine structure of processes important in the upper troposphere and lower stratosphere (UTLS) and polar vortex mixing. The performance of the HIRDLS instrument and the pre-launch calibration equipment and procedures are essential to the achievement of these goals. The results of tests of the equipment to-date are described. These results and the procedures and equipment that are in place for the pre-launch calibration suggest that HIRDLS will be well capable of meeting the science requirements.