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 5905-00-358-7581
NSN 6110-01-036-5485
NSN 6240-00-923-8944
NSN 6130-01-182-0536
NSN 5999-01-008-8825
NSN 6650-00-879-5834
NSN 5925-01-144-9404
NSN 5965-00-722-7574
NSN 5835-01-461-8184
NSN 6610-01-571-8038
NSN 2925-01-394-9658
NSN 6110-01-129-2520