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 5925-01-544-9096
NSN 5910-00-121-7909
NSN 5835-00-113-6090
NSN 7035-00-200-5162
NSN 6320-00-790-4844
NSN 6685-00-043-3739
NSN 5999-01-028-6145
NSN 6130-01-393-2456
NSN 6110-01-660-4195
NSN 5915-00-645-7600
NSN 5930-00-142-6959
NSN 5930-01-407-2818