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 6240-01-311-1121
NSN 6320-00-500-4172
NSN 6620-00-846-3287
NSN 5905-00-275-0361
NSN 5895-00-518-0217
NSN 5910-01-268-4486
NSN 5990-01-024-9659
NSN 5999-01-097-4772
NSN 6645-01-646-2953
NSN 6110-01-382-2553
NSN 6145-00-311-8884
NSN 6105-01-010-3964