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 6105-01-508-7921
NSN 5985-01-517-0479
NSN 6610-01-151-1540
NSN 6685-00-203-2389
NSN 5950-01-413-8272
NSN 5950-00-432-0292
NSN 6620-01-412-0938
NSN 5975-00-185-5243
NSN 5895-01-423-0813
NSN 6685-01-441-1698
NSN 5920-01-480-4360
NSN 5835-01-426-6573