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 6145-01-512-2903
NSN 5910-01-023-7615
NSN 6650-00-139-5454
NSN 5835-01-377-8972
NSN 6610-00-150-6408
NSN 5920-00-554-0437
NSN 5925-01-352-0455
NSN 5925-00-844-4132
NSN 5945-01-412-9354
NSN 6220-00-882-8003
NSN 7035-01-304-2013
NSN 6645-00-527-7258