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 6240-00-846-9815
NSN 6135-01-626-6325
NSN 5935-01-278-9117
NSN 6240-01-138-6453
NSN 6645-01-282-3624
NSN 5975-01-051-5039
NSN 6105-00-540-5616
NSN 6145-00-862-7069
NSN 6620-01-406-6840
NSN 5925-01-388-2128
NSN 6645-01-167-5814
NSN 5910-01-054-1654