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 6110-01-138-5626
NSN 5895-01-259-8359
NSN 6320-00-831-2227
NSN 6645-01-044-6376
NSN 6150-00-790-2297
NSN 5996-00-081-0787
NSN 5910-01-017-3789
NSN 6645-00-498-6869
NSN 5855-01-147-6024
NSN 5925-01-631-3147
NSN 5930-01-003-9174
NSN 5895-00-241-6169