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 2925-01-071-9291
NSN 6105-01-216-0930
NSN 7035-00-756-4374
NSN 6320-00-242-3300
NSN 2925-00-828-5301
NSN 5910-01-394-3729
NSN 6685-01-562-0985
NSN 5925-01-361-8836
NSN 6685-01-426-8929
NSN 6645-00-715-1531
NSN 6320-00-809-5744
NSN 5895-01-363-6556