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 5975-01-506-5408
NSN 6110-00-085-3275
NSN 5935-00-181-8672
NSN 6685-00-768-7633
NSN 6135-01-659-3426
NSN 5920-00-912-2823
NSN 7035-01-146-7096
NSN 6645-00-632-0736
NSN 6105-00-933-5161
NSN 6130-01-100-8077
NSN 6105-01-245-4329
NSN 5950-00-918-4019