The cleaning solution was diluted to10% using DI water in a 600 mL beaker. The solution was heated to 130 F. Coupons were cleaned for five minutes. Rinsing was performed for two minutes using tap water at 120 F and air dried for about two hours also at room temperature. After drying is complete, final weights are recorded and efficiencies are calculated.
SUBSTRATE MATERIAL: 1-Nickel/Copper (202-715); 2-Stainless Steel (202-410 B-85)
CONTAMINANTS: Table 1 lists the contaminants and the related CAS#s for this trial.
Table 1. Contaminants Cleaned
Contaminant CAS #
Oil 64741-89-5
Lubricant 64742-47-8, 9003-29-6
Ink 67-63-0, 108-88-3, 9004-70-0, 141-78-6, 64-17-5, 109-60-4
Grease 64742-47-8
Adhesive 9010-98-4, 65997-13-9, 68083-03-4, 67-56-1, 1314-13-2, 119-47-1, 108-88-3, 8052-10-6
The Concrete/Graffiti remover was successful in removing the oil and lubricant from the surface, but may have caused some damage to the substrate, but could not be visual detected. Further compatibility tests could be performed to determine the extent of damage being done to the metal. The cleaner was not very successful in removing the grease and ink. Most of the adhesive was cleaned from the surface. Table 2 lists the percent removal for each contaminant. The All purpose cleaner removed moderate amounts of the oil, lubricant and ink. The cleaner was very efficient in removing the grease and adhesive. Table 2 also lists the cleaning results from the All purpose cleaner.
Table 2. Cleaning Efficiencies
| Contaminant
|
Concrete/Graffiti
|
All Purpose
|
| Oil
|
102
|
78
|
| Lubricant
|
102
|
80
|
| Ink
|
37
|
75
|
| Grease
|
66
|
94
|
| Adhesive
|
86
|
96
|