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 6620-01-211-9063
NSN 5905-00-171-2652
NSN 6150-01-627-2111
NSN 6110-01-188-8017
NSN 4140-01-175-0919
NSN 6645-01-142-2416
NSN 5985-01-418-0804
NSN 2925-01-587-3956
NSN 7035-00-679-9027
NSN 6145-01-254-4080
NSN 5945-01-289-3056
NSN 5930-00-216-4495