Used for acid spot testing to differentiate between carbon steel and molydbate steel
NSN 6150-01-634-0575
NSN 6610-00-161-0680
NSN 6220-01-336-2365
NSN 6240-00-407-1024
NSN 6645-00-140-5173
NSN 2925-00-233-5644
NSN 5835-01-629-2044
NSN 5835-00-594-4921
NSN 6620-00-613-3023
NSN 6240-01-152-9015
NSN 5920-01-222-5107
NSN 6220-00-242-7065