Basic cleaning performance testing was conducted using ASTM G122 as the bases for cleaning.
Cleaning: 5 min Immersion cleaning with stir-bar agitation @ 120 F
Rinsing: 1/2 min, manual, in 102 F water (tap)
Drying : 1 min with heat gun @ 500F
Contaminant: ITW, Dykem Corp, Ink, Steel Blue - DX - 100
CAS#'s 64175, 12386
None of these cleaners were effective on the dried ink contaminant. The LF 2100 was especially ineffective, it seems to react with the ink and deposit an oily or greasy substance onto the coupon, increasing its weight dramatically. LF: This cleaner reacted w/ the ink, changing its color from deep blue-green to purple greasy/oily film. After cleaning the ink never dried, it stayed tacky or wet. Gravimetric analysis showed there was a significant increase in weight.