Trial #1
To evaluate additional cleaners for replacing TCE.
An additional five products were selected from the lab's database of products. These five products were diluted to 5% using DI water in 600 ml beakers. Two products from the previous trial were also used in this trial. These products were diluted to 10% using DI water in 600 ml beakers. All seven products were heated to 130 F on a hot plate. Twenty-one preweighed coupons were coated with the New England Industrial Lubricant NEICUT 333 using a hand held swab. Coupons were then weighed again. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Following cleaning, coupons were rinsed in tap water for 30 seconds at 120 F and dried for 1 minute at 500 F with a Master Appliance heat gun. Once coupons cooled to room temperature, final weights were recorded and efficiencies were calculated.
Only two products, Surface Cleanse 930 and SC Aircraft & Metal Cleaner, were effective in removing the lubricant using immersion cleaning. The others removed less than 75%. The following table lists the efficiencies for each product.
| Cleaners
|
Coupon 1
|
Coupon 2
|
Coupon 3
|
Average
|
Std Dev
|
| Surface Cleanse
|
83.69
|
84.72
|
85.37
|
84.59
|
0.85
|
| Sea Wash
|
76.16
|
67.85
|
66.86
|
70.29
|
5.11
|
| SC Aircraft
|
91.08
|
91.33
|
91.55
|
91.32
|
0.24
|
| Inproclean
|
62.15
|
40.26
|
59.58
|
53.99
|
11.96
|
| Dirtex
|
47.71
|
46.13
|
54.48
|
49.44
|
4.44
|
| Beyond
|
69.85
|
74.43
|
74.66
|
72.98
|
2.72
|
| Polyspray
|
65.65
|
71.86
|
48.82
|
62.11
|
11.92
|
The two effective products will be used in the next trial. Operating conditions will be modified in an attempt to improve cleaning efficiencies.
No relation