Wratten filter is a combination of two filters cut to size and calibrated; reusable, disposable; to detect particles in fuel samples
NSN 6135-00-877-1659
NSN 5920-00-551-1314
NSN 2925-00-308-0797
NSN 2925-00-010-9609
NSN 6320-01-506-9439
NSN 6135-01-189-2293
NSN 6650-00-372-6035
NSN 5855-01-020-7982
NSN 5985-00-721-4303
NSN 5925-00-468-2757
NSN 5950-00-327-0405
NSN 5895-00-286-3788