Two products were selected from the lab's database of testing results. Products were selected based on contaminant removal and substrate compatibility. Both products were diluted to 5% using DI water and heated to 130 F by immersing beakers into a Branson 3510 ultrasonic tank filled with water. Solutions were de-gassed for 5 minutes.
Parts were placed into a basket and immersed into each solution and cleaned using 40 kHz ultrasonic energy for 5 minutes. After cleaning, a set of parts were removed from the cleaning and were not rinsed. These parts were dried using compressed air at room temperature for 30 seconds. Observations were made following drying. A second set of parts were rinsed in a single tap water bath at 130 F for 20 seconds, followed by the air drying and analysis. A final set were rinsed in three tap water baths, each at 20 seconds and 130 F. Drying and analysis were the same as before.