The terminology is mired in semantics (no silly, not Hebrew! laboratory jargonese!!!!!): what one in street language uses as OKAY, good enough, fine, acceptable, within limits,within range,falls within the standards,has enough to be real,is sweet, dyn-o-mite! or whatever else one might use to indicate SATISFACTORY is exactly what the FBI term "suitable" means! THE SAMPLE Q59 is acceptable to compare to any other unknown or known exemplar and make a conclusion! THEY DID just that by saying Q59 is similiar in qualities that we measure, discuss, compare,argue about, dance around the campfire,look under a microscope (including a stereoscope!), run thru a GC/MS and for heaven's sake, sometimes EAT (Okay...not the last test! but you all get my belabored point).
And you all wondered why we MD write scrips with nasty hand-writing and in Latin?! HA~ It's a secret club! J/K~