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 6105-01-513-9330
NSN 5965-01-223-3307
NSN 6320-00-790-4844
NSN 7035-01-158-7673
NSN 5996-01-145-4900
NSN 5935-01-339-7792
NSN 5945-01-328-0717
NSN 5855-00-167-7893
NSN 4140-01-471-7193
NSN 4140-00-381-4563
NSN 6130-01-482-3699
NSN 5996-01-444-1488