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 6685-00-915-5601
NSN 5985-00-883-1163
NSN 6650-01-280-9353
NSN 5905-01-558-9800
NSN 5835-00-358-4235
NSN 7035-01-177-2807
NSN 5945-01-512-7698
NSN 6685-01-437-0209
NSN 6130-01-068-4475
NSN 6650-00-349-8732
NSN 6240-00-594-7138
NSN 6610-01-426-5090