Trial Purpose:
Evaluating cleaners for removal.
Date Run:
10/01/2001Experiment Procedure:
Seven cleaners were selected based on previous trial. Solutions were diluted to 5% using DI water in 250 ml beakers. All solutions were heated to 120 F on a hot plate. Twenty-one preweighed coupons were coated with the supplied slurry using a hand held swab and allowed to dry for 2 hours. These coupons were then weighed again. Three coupons were immersed into each beaker to be cleaned for 5 minutes. After the cleaning, the coupons were rinsed in DI water and dried using air blow off. Coupons were then weighed a final time and percent efficiencies were calculated for each cleaner.
Saint Gobain Industrial Ceramics Water Based Alumina (1344-28-1, 102-71-6)
Trial Results:
All seven cleaners removed over 94% of the alumina from the ceramic coupons in the five minutes of cleaning. ND 17 and LPS were the most effective removing just over 97%. The following table lists the calculated efficiencies.
Table 1. Cleaning Efficiencies
| Cleaner | Coupon 1 | Coupon 2 | Coupon 3 | Average | Std Dev | Rank |
| Amberclean | 95.40 | 97.66 | 90.45 | 94.50 | 3.69 | 5 |
| Micro 90 | 97.18 | 95.56 | 89.58 | 94.11 | 4.00 | 7 |
| LPS | 94.91 | 96.99 | 100.00 | 97.30 | 2.56 | 2 |
| ND 17 | 96.68 | 97.12 | 98.13 | 97.31 | 0.74 | 1 |
| Inproclean | 90.80 | 97.38 | 94.54 | 94.24 | 3.30 | 6 |
| Polyspray | 97.35 | 97.06 | 93.11 | 95.84 | 2.37 | 3 |
| Safety First | 96.15 | 92.91 | 96.21 | 95.09 | 1.89 | 4 |
Success Rating:
A follow up test, usually based on company input.Conclusion:
In order to obtain 100% removal of the contaminant, two simple options could be taken. The first would be to increase the cleaning time and the second would be to use ultrasonic equipment.
