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 6145-01-415-1263
NSN 6240-00-266-6258
NSN 7035-00-679-9027
NSN 5895-00-404-7266
NSN 5999-00-114-1486
NSN 5999-01-610-3061
NSN 6320-01-554-0901
NSN 5855-01-038-2189
NSN 6685-01-251-1054
NSN 6645-01-176-3372
NSN 5999-01-513-3575
NSN 5998-00-528-2352