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 5910-01-342-4490
NSN 6135-00-477-8847
NSN 5965-00-434-7617
NSN 5965-00-820-0469
NSN 5990-00-466-2952
NSN 6685-01-014-8705
NSN 6220-00-432-9402
NSN 6240-01-359-9807
NSN 5990-01-225-9820
NSN 5996-01-422-7288
NSN 6130-01-349-2150
NSN 5925-01-116-4439