The analytical flow of contamination knowledge plates allowed analyses by a comprehensive array of instruments and techniques available. After receipt at JSC, 75% of the samples are archived (thick line) to be available for parallel analysis with Bennu samples. The blue boxes with bold text show methods performed on each sample. The orange boxes with italic text show methods performed on a small subset of samples. The white boxes show methods that were available, but not employed. Microprobe two-step laser desorption/laser ionization mass spectrometry (MS) (μ-L2MS), X-ray absorption near edge structure (XANES), time-of-flight secondary ion MS (ToF-SIMS), transmission electron microscopy (TEM), electron microprobe (EMP), laser ablation inductively coupled plasma MS (LA-ICPMS), inductively coupled plasma MS (ICP-MS), ATP luminosity analysis (ATP), GC combustion isotope ratio MS (GC-IRMS)