Each well has dried film of a different substrate
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 5905-01-153-8131
NSN 5945-01-575-5058
NSN 4140-01-233-1517
NSN 5998-00-401-8053
NSN 6685-00-864-4729
NSN 6685-01-605-2959
NSN 5945-00-269-5375
NSN 5999-00-621-3276
NSN 6135-01-448-0471
NSN 5915-01-396-5471
NSN 5925-00-194-9146
NSN 6105-01-330-5504