Trial #12
To evaluate client requested products on the sixth supplied soil.
The three cleaners were diluted to 5% using DI water in 600 ml beakers at room temperature.
Nine preweighed titanium coupons were coated with ink from a Sharpie marker. The ink was applied first in a side to side manner and then in an up and down direction. Coupons were then weighed a second time to determine the amount of soil added. Three coupons were cleaned for about 2 minutes using a Gardner Straight Line Washability unit. Three coupons were placed into a Gardner Straight Line Washability unit. A Professional Painter's Rag was immersed into a beaker of the cleaning solutions and then attached to the cleaning sled. The cleaning unit was run for 75 cycles (~2 minutes). At the end of the cleaning cycle, coupons were weighed again and efficiencies were calculated.
One of the three products removed over 85%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| M Aero
|
0.0019
|
0.0002
|
89.47
|
|
|
0.0030
|
0.0004
|
86.67
|
|
|
0.0014
|
0.0002
|
85.71
|
| M Aero NS
|
0.0014
|
0.0003
|
78.57
|
|
|
0.0024
|
0.0008
|
66.67
|
|
|
0.0025
|
0.0006
|
76.00
|
| M 400
|
0.0010
|
0.0007
|
30.00
|
|
|
0.0011
|
0.0008
|
27.27
|
|
|
0.0014
|
0.0010
|
28.57
|
The three supplied products have been tested on six soils. The M Aero was the only product to work on all six contaminants. The M Aero NS worked on all except the ink. With further cleaning time, the ink would have been removed by M Aero NS.
No relation