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 6220-01-262-9167
NSN 6650-01-519-9165
NSN 5935-01-191-8264
NSN 5905-01-462-4304
NSN 6145-01-647-8838
NSN 5895-00-444-8913
NSN 5975-01-630-1234
NSN 5950-00-528-2573
NSN 5996-00-301-5243
NSN 5945-00-061-2707
NSN 6240-01-598-4478
NSN 6105-01-575-6261