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 5999-00-268-3022
NSN 5950-01-453-6286
NSN 6610-01-647-7412
NSN 5975-01-188-8873
NSN 5835-00-143-4153
NSN 5998-01-502-9392
NSN 5985-01-159-5128
NSN 5930-01-066-8694
NSN 5960-01-279-2589
NSN 6620-01-250-7445
NSN 4140-01-432-0855
NSN 5895-00-182-7544