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 6645-00-081-4298
NSN 5905-01-463-3044
NSN 7035-00-299-7150
NSN 2925-01-569-1549
NSN 6220-00-807-3432
NSN 5915-00-081-5320
NSN 5965-01-107-8549
NSN 5910-01-157-8366
NSN 5985-01-537-0247
NSN 5950-01-267-6094
NSN 6650-01-277-4763
NSN 5895-00-111-4599