To evaluate cleaning performance of samples taken after 6 months of use.
Date Run:
10/17/2007
Experiment Procedure:
Six samples from three locations (two from each) were emptied into 400 ml beakers and used at requested temperature for cleaning. In addition, an unused cleaning product was included for comparison.
Twenty-one preweighed coupons were coated with a composite soil made from the filtration bags collected at the three sites. The contaminant mix was allowed to dry on the coupons for one hour. After this drying, a second weight was recorded to determine the amount of soil added. Three coupons were immersed into each sample and cleaned for 5 minutes using no agitation. At the end of the cleaning, coupons were rinsed for 15 seconds in tap water and dried using compressed air at room temperature. Once the coupons were dry, the final weights were recorded, and efficiencies were calculated.
Trial Results:
There were no major differences in the cleaning efficiencies for all the samples from each site. The second sample collected from Flahertys was the only samples to have efficiencies lower than 98%. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Bergdales 5
0.4489
0.0108
97.59
0.8501
0.0129
98.48
0.9977
0.0081
99.19
Bergdales 6
1.0125
0.0083
99.18
0.6349
0.0122
98.08
0.4262
0.0125
97.07
Flahertys 5
0.6779
0.0091
98.66
1.2229
0.0069
99.44
0.7464
0.0105
98.59
Flahertys 6
0.4225
0.0208
95.08
0.3789
0.0148
96.09
0.9618
0.0077
99.20
Syversons 5
0.7991
0.0083
98.96
0.8121
0.0199
97.55
0.9886
0.0147
98.51
Syversons 6
0.6100
0.0206
96.62
0.6814
0.0065
99.05
1.0462
0.0071
99.32
New
1.0989
0.0097
99.12
1.0689
0.0113
98.94
0.8155
0.0123
98.49
Success Rating:
A cleanliness study, addressing only various analytical techniques.
Conclusion:
Cleaning performances were consistent for all three locations and the fresh cleaning product.
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