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 6110-00-762-2851
NSN 7035-01-330-1146
NSN 2925-00-066-9700
NSN 5925-01-224-1758
NSN 6105-00-878-4745
NSN 5915-00-518-1644
NSN 6130-01-649-1562
NSN 6610-01-580-2667
NSN 5996-01-268-8577
NSN 6105-01-420-6541
NSN 6620-00-025-1889
NSN 5998-01-049-5426