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 6645-01-307-1027
NSN 5950-01-100-2106
NSN 5910-01-322-9497
NSN 5950-00-722-3050
NSN 5960-01-276-7836
NSN 4140-01-483-0922
NSN 6620-01-603-6442
NSN 7035-00-794-0792
NSN 5835-01-632-6627
NSN 5990-01-646-8048
NSN 5990-01-421-3325
NSN 6620-01-503-2667