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 5945-00-909-4274
NSN 5990-01-591-8797
NSN 5996-01-643-9616
NSN 6650-01-172-2226
NSN 6645-01-016-7706
NSN 6130-01-010-4299
NSN 5855-01-423-1768
NSN 4140-00-451-8374
NSN 5950-01-449-2580
NSN 5930-00-219-6887
NSN 5965-01-470-0393
NSN 6135-00-196-5267