Basic cleaning performance testing was conducted using ASTM G122 as the bases for cleaning.
Degasing: Degasing the solution by keeping solutions in ultrasonic crest for 5 min at 120 F.
Cleaning: Ultrasonic for 2 min. at 120 F.
Rinsing: 1/2 min. manual with water at 120 F.
Contaminant: ITW, Dykem Corp, Ink, Steel Blue - DX - 100
Only Perfect way 147 was found to be effective with 104% removal on average. This differs from trial 147, where the same ultrasonics and cleaners were used (except for Natural Blue was used in Trial 147) after 5-minute immersion cleaning in trial 145.