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 7035-01-547-2750
NSN 6645-00-334-0115
NSN 5905-01-167-1579
NSN 4140-01-606-0805
NSN 6620-01-338-2995
NSN 5925-01-226-8320
NSN 6645-01-501-0576
NSN 5905-00-060-6768
NSN 6620-00-111-4506
NSN 5996-00-349-8885
NSN 5925-01-272-9577
NSN 5950-00-446-4898