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 5935-01-657-0030
NSN 6240-01-453-2773
NSN 6320-01-108-5933
NSN 4140-01-657-8670
NSN 6240-01-518-8213
NSN 5996-01-382-5113
NSN 5950-01-382-9337
NSN 6150-01-196-8914
NSN 6150-01-527-7376
NSN 5945-00-562-1745
NSN 5990-01-089-9694
NSN 5945-01-346-2982