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 5950-00-661-2612
NSN 5935-00-554-0244
NSN 6150-00-928-4961
NSN 5855-01-076-2741
NSN 6610-01-338-8531
NSN 5975-00-319-5034
NSN 5910-01-512-8782
NSN 6645-00-704-3630
NSN 6685-01-095-2471
NSN 5950-00-574-5562
NSN 6620-01-355-4339
NSN 7035-01-425-7082