Trial Purpose:
To evaluate previous cleaners for fourth contaminant
Date Run:
08/23/2002Experiment Procedure:
Three products from that were successful in precious trials were used at full strength in 600 ml beakers. In addition to these products, another semi-aqueous product was selected from the lab's database and used at full strength.
A fifth product was also selected from the lab's databases. The fifth product was diluted to 10% using DI water in a 600 ml beaker. All five products were degassed for 5 minutes using a Crest 40 kHz ultrasonic tank. Fifteen preweighed coupons were coated with Emerson & Cuming C-990 Spec 333 (7440-22-4, epoxy resin, Cresol Novolac Polymer) using a hand held swab. The coating was allowed to sit for 15 minutes, followed by a second coupon weighing. Three coupons were cleaned in each solution for 5 minutes using ultrasonic energy. After cleaning, coupons were rinsed in tap water at 68 F for 15 seconds and dried using air knives at 68 F for 2 minutes. Once dry, final weights were recorded and efficiencies calculated.
Trial Results:
The four semi-aqueous products were very successful in removing over 99% of the coating. It was noted that they required less than the 5 minutes of cleaning. Approximately 3 minutes would have yielded the same results. The aqueous product removed just over 88% of the coating. The table below lists the amount of contaminant applied and removed for each coupon cleaned.
| Cleaner | Initial wt | Final wt | % Removed |
| Bio T Max | 0.3411 | 0.0026 | 99.24 |
| 0.5844 | 0.0019 | 99.67 | |
| 0.4694 | 0.0041 | 99.13 | |
| DS-108 | 0.6949 | 0.0010 | 99.86 |
| 0.3751 | 0.0017 | 99.55 | |
| 0.6663 | 0.0011 | 99.83 | |
| Solsafe 245 | 0.5104 | 0.0018 | 99.65 |
| 0.6354 | 0.0020 | 99.69 | |
| 0.3860 | 0.0018 | 99.53 | |
| Ionox HC 2 | 0.4349 | 0.0015 | 99.66 |
| 0.5060 | 0.0061 | 98.79 | |
| 0.3631 | 0.0002 | 99.94 | |
| Amberclean | 0.4216 | 0.0298 | 92.93 |
| 0.5635 | 0.1195 | 78.79 | |
| 0.8262 | 0.0618 | 92.52 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
The next test will be to use these successful cleaners for the next contaminant.
