To evaluate the effectiveness of SB-27 and SB-32 in removing soluble oil #35 and mobil DTE from stainless steel coupons as a potential replacement for TCE with a heated immersion cleaning method.
Date Run:
06/18/2024
Experiment Procedure:
12 stainless steel coupons were used for both cleaners being tested, for a total of 6 coupons per cleaner. The initial weights of each coupon were recorded. The bottom third of every coupon was soiled by applying the contaminate with a swab. The dirty weights of each coupon were then recorded. The coupons were then subjected to heated immersion at 125 degrees Fahrenheit in the cleaners with a 240 RPM spin for 10 minutes. After the coupons were cleaned, they were left to air-dry overnight. The next morning, the clean weights of each coupon were taken.
Trial Results:
Cleaner
Soil
Coupon #
Initial wt of cont.
Final wt of cont.
%Cont Removed
Average % Removal
Average Cleaner %
SB-27
Soluble Oil # 35
2
0.0118
0.0017
85.59322034
92.01
90.40
66
0.0635
0.0007
98.8976378
67
0.1204
0.0102
91.5282392
Mobile Oil
36
0.0201
0.0017
91.54228856
88.80
57
0.0268
0.0035
86.94029851
59
0.0356
0.0043
87.92134831
SB-32
Soluble Oil # 35
5
0.044
0.0034
92.27272727
89.01
89.15
9
0.0805
0.0053
93.41614907
28
0.06
0.0112
81.33333333
Mobile Oil
34
0.0491
0.0035
92.87169043
89.29
54
0.0376
0.0036
90.42553191
55
0.0376
0.0058
84.57446809
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Overall, the cleaners did an effective job removing the contaminants.
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