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 6240-00-126-4551
NSN 6610-01-544-9828
NSN 5960-01-234-0926
NSN 5990-00-672-1376
NSN 5965-01-455-3738
NSN 5960-01-392-6982
NSN 7035-00-117-0418
NSN 5990-01-142-0538
NSN 5855-01-481-3906
NSN 5930-01-042-3450
NSN 5975-01-652-8244
NSN 5835-01-553-4894