Trial #9
Evaluating cleaners for removal.
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)
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
|
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.
No relation