Trial #0
To identify a low or non voc cleaner for the removal of oil from brass materials.
Eight cleaners were selected the lab’s database of effective testing and Industrial Cleaning Survey: Directory of Vendors 4th edition. Six solutions were diluted with DI water to five percent by volume in a 600 ml beaker. The other two products were diluted to 10% as suggested by the vendor. Twenty-four preweighed coupons were coated with the supplied oil and weighed again. Three coupons were cleaned in a solution for five minutes at room temperature using stir-bar agitation. After cleaning the coupons were rinsed for 15 second in tap water at 120 F and allowed to air dry for two hours. Following the drying, final clean weights were recorded and efficiencies were calculated.
SUBSTRATE MATERIAL: Brass Coupons
CONTAMINANTS: Oil-Texaco Lubricant Company Cleartex D (CAS#: 64742-65-0, 68527-02-6)
CONTAMINATING PROCESS USED: Coupons were coated with oil using a hand held swab.
Three cleaners, Chrisal, SWR Corp & Oakite, were capable of removing over 70% of the oil from the brass coupons at room temperature. Two solutions, Valtech and Envirosolutions, removed about 67% and the remaining solutions cleaned less than 55% of the contaminant. Table 2 lists the calculated efficiencies for each solutions evaluated.
Table 2. Room Temperature Cleaning
| Cleaner
|
Alconox
|
Chrisal
|
Savorgran
|
SWR Corp
|
Valtech
|
C&D
|
Oakite
|
Envirosolutions
|
| Coupon 1
|
53.18
|
87.69
|
52.58
|
73.79
|
66.42
|
45.85
|
83.32
|
60.72
|
| Coupon 2
|
58.18
|
87.42
|
40.81
|
71.67
|
63.08
|
56.24
|
71.19
|
65.98
|
| Coupon 3
|
44.70
|
73.58
|
50.42
|
68.30
|
70.15
|
60.67
|
80.71
|
76.39
|
| Average
|
52.02
|
82.90
|
47.94
|
71.25
|
66.55
|
54.25
|
78.41
|
67.70
|
Since most of the cleaners selected removed a majority of the contaminant while at room temperature, an additional test will be performed using all cleaners heated to 130 F.
No relation