Trial #5
To evaluate three additional products on second supplied soil.
Three products were selected based on success on the fourth supplied contaminant. All were used at full strength in a 250 ml beaker at room temperature. Nine preweighed silver plated copper coupons were coated with the Houghton Chemical Cut-Max 135 (64742-52-5, 64741-96-4) 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.
All three products removed over 99% of the oil in five minutes. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| OS 10
|
0.0880
|
0.0004
|
99.55
|
|
|
0.1503
|
-0.0001
|
100.07
|
|
|
0.1211
|
0.0007
|
99.42
|
| OS 20
|
0.1031
|
-0.0001
|
100.10
|
|
|
0.1743
|
0.0005
|
99.71
|
|
|
0.1313
|
0.0002
|
99.85
|
| OS 30
|
0.1355
|
0.0014
|
98.97
|
|
|
0.1048
|
0.0008
|
99.24
|
|
|
0.1512
|
0.0012
|
99.21
|
The same three products will be tested on the third supplied soil under the same conditions.
No relation