Trial #3
To evaluate products on fourth supplied soil.
Six products were selected based on client request for vapor degreasing solvents. Each product was used at full strength in a 250 ml beaker and heated to 96 F on a hot plate. Eighteen preweighed aluminum coupons were coated with the C.P. Hall Co. Plasthall ESO oil (8013-07-8) using a hand held swab. Coupons were weighed a second time to determine the amount of soil added to each coupon. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. After cleaning parts were allowed to sit for 10 minutes for drying at room temperature. The coupons were weighed a final time and efficiencies were calculated.
Five minutes of cleaning did not appear to provide enough cleaning time for this oil. Three products removed over 80% but less than 85% of the soil in five minutes. Two products (HFE 7100 & 7200) removed under 60%. The table shows the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| HFE 7100
|
0.0913
|
0.0638
|
30.12
|
|
|
0.2101
|
0.0712
|
66.11
|
|
|
0.1712
|
0.0689
|
59.75
|
| HFE 7200
|
0.2600
|
0.0776
|
70.15
|
|
|
0.2033
|
0.1045
|
48.60
|
|
|
0.1624
|
0.0690
|
57.51
|
| HFE 71DE
|
0.2856
|
0.0366
|
87.18
|
|
|
0.1735
|
0.0442
|
74.52
|
|
|
0.2198
|
0.0440
|
79.98
|
| AK 225
|
0.1733
|
0.0431
|
75.13
|
|
|
0.2422
|
0.0176
|
92.73
|
|
|
0.1711
|
0.0255
|
85.10
|
| Vertrel CCA
|
0.2271
|
0.0516
|
77.28
|
|
|
0.3007
|
0.0356
|
88.16
|
|
|
0.2999
|
0.0318
|
89.40
|
| Vertrel MCA
|
0.2571
|
0.0629
|
75.53
|
|
|
0.2051
|
0.0472
|
76.99
|
|
|
0.1928
|
0.0526
|
72.72
|
Follow up tests will be conducted for all four contaminants using longer times. An attempt will be made to clean using vapor degreasing.
No relation