Upon engineering approval, supplier and affected Materials Engineering activity shall
establish mutually agreed upon quality control limits, to be listed on Supplement B,
and will be used for ongoing product verifications at mutually agreed upon
frequencies. The infrared absorption spectra of the approved material shall constitute
the reference standard and shall be kept on file. All samples shall produce infrared
spectra that correspond to the reference standard when tested under the same
conditions as those specified on the master spectra.