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 5920-01-367-2236
NSN 6650-00-169-1866
NSN 5920-01-135-8581
NSN 5930-01-147-4841
NSN 5985-01-634-0635
NSN 5905-00-544-2716
NSN 5930-00-318-2359
NSN 5965-00-071-0562
NSN 6240-01-611-7193
NSN 5915-01-421-4352
NSN 5998-01-369-5321
NSN 5998-01-344-4294