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 5855-00-361-0167
NSN 5998-01-349-7717
NSN 4140-01-139-4877
NSN 7035-01-036-0236
NSN 5930-01-201-6501
NSN 6220-00-825-2783
NSN 5935-01-622-4152
NSN 6130-01-352-6112
NSN 5990-01-176-9731
NSN 5975-01-445-8942
NSN 6130-01-433-2449
NSN 5960-01-399-4327