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 6135-01-151-2705
NSN 5960-01-281-5437
NSN 6150-00-997-4492
NSN 5835-00-074-3700
NSN 6150-00-548-9802
NSN 6320-01-422-1212
NSN 6220-01-508-3408
NSN 6145-01-447-4306
NSN 7035-01-222-2534
NSN 5965-01-399-8454
NSN 5990-01-425-2175
NSN 5945-00-969-5643