Trial Purpose:
To evaluate effective alternatives on the sixth supplied contaminant.
Date Run:
05/17/2007Experiment Procedure:
Five products from the previous trial were selected and used at full strength based on past performances. The cleaning solutions were all heated to 130 F on a hot plate.
Fifteen preweighed alloy coupons were coated with the sixth contaminant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded, and efficiencies were calculated for each coupon cleaned.
Trial Results:
All five products removed over 92% of the lubricant. Three removed over 95% and one of these (DS 108) removed over 97%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner | Initial wt | Final wt | % Removed |
| Soy Gold 1100 | 0.6604 | 0.0227 | 96.56 |
| 0.7529 | 0.0258 | 96.57 | |
| 0.4799 | 0.0346 | 92.79 | |
| Solsafe 245 | 0.4885 | 0.0197 | 95.97 |
| 0.5469 | 0.0269 | 95.08 | |
| 0.5791 | 0.0279 | 95.18 | |
| Shopmaster RC | 0.4321 | 0.0467 | 89.19 |
| 1.4430 | 0.0325 | 97.75 | |
| 0.4722 | 0.0505 | 89.31 | |
| DS 108 | 0.4749 | 0.0130 | 97.26 |
| 0.4202 | 0.0135 | 96.79 | |
| 0.6765 | 0.0140 | 97.93 | |
| D Greeze 500 LO | 0.3274 | 0.0223 | 93.19 |
| 0.4527 | 0.0240 | 94.70 | |
| 0.4694 | 0.0234 | 95.01 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
The five products should be retested on the fourth and fifth contaminants with modified operating conditions to improve cleaning efficiency.
