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Trial Number 1
Trial Purpose:
To evaluate the efficiency of various cleaners in the removal of motor oil from stainless steel coupons.
Date Run:
06/07/2017
Experiment Procedure:
A set of six stainless steel coupons were weighed on an analytical balance to determine their initial mass. Once this was completed the coupons were evenly soiled with half a gram of motor oil with a handheld swab. The coupons were reweighed to determine the mass of the coupons with the contaminant applied.
Cleaning process: Dilutions were prepared for the two cleaners, SWR One and Suma Break-Up HD Degreaser as recommended by the vendor. Two 500 mL beaker solutions were made with 10% dilution of SWR One cleaner, and the other with 5% dilution of Suma Break-Up HD Degreaser. Three soiled coupons were placed into the SWR One cleaning solution and the remaining three soiled coupons were placed into the Suma Break-Up HD Degreaser. The coupons were immersed for a total of 30 minutes. After this was completed the coupons were placed into beakers at room temperature with tap water in the beaker, and allowed to sit for a minute in the bath before being removed. Thereafter, the coupons were blow dried at low pressure for 5 minutes and left to air dry for 2 hours. Following the air dry period, the coupons were weighed on the analytical balance to obtain the amount of contaminant removed.
Trial Results:
In terms of overall effectiveness both cleaners are ineffective at removing motor oil from the stainless steel coupons. However, the comparative cleaner: Suma Break-Up HD Degreaser was observed to be about as effective as the sampled cleaner.
Cleaner
Initial wt. (g)
Final wt.(g)
% Removed
Overall Avg Removal
SWR One
0.4729
0.0772
83.68
82.95
0.4893
0.0964
80.30
0.5089
0.0770
84.87
Suma Break-Up HD Degreaser
0.4953
0.0924
81.34
78.77
0.4910
0.0888
81.91
0.5042
0.1359
73.05
Success Rating:
A cleanliness study, addressing only various analytical techniques.
Conclusion:
SWR One cleaner, with a difference of the two average overall removal percentages being less than 5%.
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