Trial #1
To evaluate product performance from collected samples from three locations.
Twelve samples from three locations (four from each) were emptied into 200 ml beakers and used at room temperature.
Thirty-six 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.
There were no major differences in the cleaning efficiencies for all the samples from each site. The second and third samples collected from Flahertys were the only samples to have efficiencies lower than 99%. 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 1
|
1.6657
|
0.0021
|
99.87
|
|
|
0.9887
|
0.0050
|
99.49
|
|
|
2.0118
|
0.0092
|
99.54
|
| Bergdales 2
|
1.6843
|
0.0035
|
99.79
|
|
|
1.2647
|
0.0062
|
99.51
|
|
|
1.7972
|
0.0075
|
99.58
|
| Bergdales 3
|
2.2490
|
0.0054
|
99.76
|
|
|
0.9844
|
0.0062
|
99.37
|
|
|
0.9878
|
0.0075
|
99.24
|
| Bergdales 4
|
2.7094
|
0.0020
|
99.93
|
|
|
2.5287
|
0.0028
|
99.89
|
|
|
2.9671
|
0.0015
|
99.95
|
| Flahertys 1
|
2.6645
|
0.0028
|
99.89
|
|
|
3.0010
|
0.0027
|
99.91
|
|
|
0.9261
|
0.0096
|
98.96
|
| Flahertys 2
|
1.8439
|
0.0041
|
99.78
|
|
|
1.2544
|
0.1078
|
91.41
|
|
|
2.1711
|
0.0118
|
99.46
|
| Flahertys 3
|
1.3692
|
0.0080
|
99.42
|
|
|
1.1305
|
0.0097
|
99.14
|
|
|
0.8593
|
0.0353
|
95.89
|
| Flahertys 4
|
1.5257
|
0.0037
|
99.76
|
|
|
1.7370
|
0.0071
|
99.59
|
|
|
1.1154
|
0.0170
|
98.48
|
| Syversons 1
|
1.0805
|
0.0108
|
99.00
|
|
|
0.9018
|
0.0070
|
99.22
|
|
|
0.9830
|
0.0114
|
98.84
|
| Syversons 2
|
1.0158
|
0.0071
|
99.30
|
|
|
1.2075
|
0.0049
|
99.59
|
|
|
1.1348
|
0.0056
|
99.51
|
| Syversons 3
|
0.6597
|
0.0078
|
98.82
|
|
|
1.6695
|
0.0027
|
99.84
|
|
|
1.3224
|
0.0049
|
99.63
|
| Syversons 4
|
1.0143
|
0.0073
|
99.28
|
|
|
0.7560
|
0.0022
|
99.71
|
|
|
1.3931
|
0.0023
|
99.83
|
Cleaning effectiveness was determined to be nearly the same from sample to sample and from site to site. The four samples from Bergdales averaged 99.66% removal, the samples from Flahertys removed 98.47% and the four from Syversons resulted in 99.38% removed.
No relation