Trial #3
To evaluate successful cleaner from previous trial on second contaminant.
The Gemtek product was diluted to 10% using DI water in a 600 ml beaker and heated to 130 F on a hot plate. Six preweighed coupons were coated with Mobil Oil Corp Mobilarma 245 (64742-88-7) using a hand held swab. Coupons were weighed again. Three coupons were cleaned for 5 minutes and the other three were cleaned for 10 minutes. Both cleaning utilized stir-bar agitation. Coupons were rinsed in tap water at 120 F for 30 seconds and dried using a Master Appliance heat gun at 500 F for 1 minute. Final weights were measured and efficiencies were calculated for the two cleaning times.
Both cleaning times resulted in complete removal of the Mobilarma 245. The table lists the efficiencies for both cleaning times.
| Cleaner
|
Coupon 1
|
Coupon 2
|
Coupon 3
|
Average
|
Std Dev
|
| 5 Minutes
|
99.00
|
102.41
|
100.00
|
100.47
|
1.75
|
| 10 Minutes
|
104.44
|
102.50
|
102.44
|
103.13
|
1.14
|
The next phase of testing will focus on cleaning supplied parts using the Gemtek SC Aircraft & Metal Cleaner.
No relation