Used for acid spot testing to differentiate between carbon steel and molydbate steel
NSN 5985-01-444-4054
NSN 5985-01-152-2022
NSN 6105-01-014-5842
NSN 6685-00-495-5362
NSN 5855-01-088-8700
NSN 5910-01-627-3266
NSN 2925-01-100-3694
NSN 4140-00-122-6422
NSN 5920-01-003-4267
NSN 6685-01-188-5940
NSN 5925-00-854-9200
NSN 5975-01-605-1450