Trial #2
To evaluate successful products on third supplied contaminant
Nine products were selected based on success in previous two trials. Each product was used at full strength in a 250 ml beaker and heated to 96 F on a hot plate. Twenty-seven preweighed silver plated copper coupons were coated with the Lanson Oil Co Vanish 6912 (6742-48-9) 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 weighed a final time and efficiencies were calculated.
Eight of the products removed over 80% of the soil within five minutes. Five of the nine products removed over 90%. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| HFE 7100
|
0.0377
|
0.0013
|
96.55
|
|
|
0.0396
|
0.0021
|
94.70
|
|
|
0.0496
|
0.0024
|
95.16
|
| HFE 7200
|
0.0962
|
0.0505
|
47.51
|
|
|
0.0378
|
0.0027
|
92.86
|
|
|
0.0221
|
0.0007
|
96.83
|
| AK 225
|
0.0191
|
0.0046
|
75.92
|
|
|
0.0361
|
0.0065
|
81.99
|
|
|
0.0484
|
0.0035
|
92.77
|
| Vertrel CCA
|
0.0461
|
0.0020
|
95.66
|
|
|
0.0149
|
0.0014
|
90.60
|
|
|
0.0689
|
0.0022
|
96.81
|
| Ensolv
|
0.1084
|
0.0043
|
96.03
|
|
|
0.0444
|
0.0048
|
89.19
|
|
|
0.0516
|
0.0043
|
91.67
|
| Ensolv A
|
0.0143
|
0.0050
|
65.03
|
|
|
0.0450
|
0.0052
|
88.44
|
|
|
0.0345
|
0.0046
|
86.67
|
| Metalnox M6760
|
0.0387
|
0.0045
|
88.37
|
|
|
0.0410
|
0.0036
|
91.22
|
|
|
0.0146
|
0.0045
|
69.18
|
| Solvon PB
|
0.0549
|
0.0011
|
98.00
|
|
|
0.0275
|
0.0024
|
91.27
|
|
|
0.0220
|
0.0022
|
90.00
|
| Solvon IP
|
0.0490
|
0.0023
|
95.31
|
|
|
0.0489
|
0.0029
|
94.07
|
|
|
0.0431
|
0.0042
|
90.26
|
The products removing over 82% of the contaminant will be used on the fourth supplied soil.
No relation