An item impregnated with a standardized quantity of a chemical agent(s) for the differentiation of certain groups of microorganisms (presumptive differentiation). For discs used for sensitivity testing, see sensitivity discs, diagnostic.
Classification: Diagnostic or lab reagents on a backing, prepared diag/lab reagents whether or not on a backing, not of heading 3002 or 3006; certified ref materials
NSN 6645-01-573-0553
NSN 5920-01-218-3885
NSN 6130-00-247-8871
NSN 6620-00-160-0844
NSN 5996-00-043-1246
NSN 6110-01-364-2145
NSN 6320-01-192-0332
NSN 6650-01-305-0027
NSN 6145-00-972-8987
NSN 5990-01-633-9503
NSN 5998-01-616-5008
NSN 5895-00-146-7987