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 6150-01-273-0907
NSN 2925-00-601-4173
NSN 5920-01-244-9344
NSN 6220-00-266-8222
NSN 4140-01-426-4120
NSN 6150-01-486-4299
NSN 5915-01-264-3810
NSN 5960-01-219-5504
NSN 6145-01-197-6921
NSN 5925-01-590-7079
NSN 5999-00-911-9140
NSN 5965-00-422-5415