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Trial Number 0
Trial Purpose:
To evaluate the efficiency of various cleaners in the removal of DCC-17 soil from ceramic, plastic, and painted aluminum coupons.
Date Run:
06/01/2017
Experiment Procedure:
A set of nine coupons consisting of three ceramic, three plastic, and three painted aluminum 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 DCC-17 soil with a handheld swab. The coupons were reweighed to determine the mass of the coupons with the contaminant applied. Three coupons were placed on a Gardner Straight Line Washability unit. A Kimberly-Clark Wypal reinforced paper towel was attached to the cleaning sled and soaked with a spray of cleaning solution. Each coupon was sprayed one time with the same cleaning solution. The cleaning unit was run for 20 cycles (~33 seconds). The coupons were allowed to dry for an hour before being weighed. The coupons were also weighed a full day afterward to determine if there were any significant changes in mass. Final weights were recorded, efficiencies were calculated and recorded.
Trial Results:
The SWR One cleaner was more effective than the Suma Break-Up HD Degreaser in removing DCC-17 soil from ceramic coupons, with an average percentage removal of 95.04% compared to 89.92% after a day of drying. The Suma Break-Up HD Degreaser was more effective than the SWR One cleaner in removing DCC-17 soil from plastic coupons, with an average percentage removal of 95.91% as opposed to 94.99% after one day of drying. The Suma Break-Up HD Degreaser was also more effective than the SWR One cleaner in removing DCC-17 soil from painted aluminum coupons, with an average percentage removal of 94.09% compared to 90.64%. In terms of overall effectiveness, the SWR One cleaner edged out the Suma Break-Up HD Degreaser slightly with an overall average removal of 93.55% as opposed to 93.3%.
Cleaner
Substrate
Initial wt
Final wt
Contaminant % Removed
% Avg. Contaminant Removed
% Efficiency
SWR One
Ceramic
0.4809
0.0391
91.87
94.31
93.20
0.4850
0.0107
97.79
0.4819
0.0324
93.28
SWR One
Plastic
0.4887
0.0323
93.39
94.96
0.4783
0.0208
95.65
0.4855
0.0202
95.84
SWR One
Chrome Plated Aluminum
0.4861
0.0471
90.31
90.34
0.4832
0.0502
89.61
0.4792
0.0427
91.09
Suma Break-Up HD Degreaser
Ceramic
0.4782
0.0435
90.90
88.73
92.81
0.4878
0.0516
89.42
0.4800
0.0678
85.87
Suma Break-Up HD Degreaser
Plastic
0.4852
0.0219
95.49
95.86
0.4814
0.0187
96.12
0.4912
0.0197
95.99
Suma Break-Up HD Degreaser
Chrome Plated Aluminum
0.4790
0.0356
92.57
93.85
0.4775
0.0214
95.52
0.4779
0.0313
93.45
Success Rating:
A cleanliness study, addressing only various analytical techniques.
Conclusion:
Both cleaners are effective at removing the DCC-17 soil from all three substrates. The SWR One cleaner is marginally better.
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