To evaluate supplied products for ASTM D4488-95 or GS 37 standard to qualify for EPA DfE program
Date Run:
11/20/2008
Experiment Procedure:
Two of the supplied cleaning products were diluted to the requested concentrations (25% and 20% by weight) and the third requested product was used at full strength.
Preweighed ceramic, plastic G-10 and painted steel coupons were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) using a handheld swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.
Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly-Clark Wypall reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The cleaning unit was run for 20 cycles (~33 seconds).
At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded, efficiencies were calculated and recorded.
Trial Results:
The two supplied products removed over 85% of the Hucker's soil using manual wiping. All three products performed comparably to the selected industry standard product. The table lists the substrate cleaned, the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
Green Force - ceramic
0.5077
0.0049
99.03
0.2808
0.0090
96.79
0.1597
0.0088
94.49
Green Force - painted steel
0.2510
0.0191
92.39
0.9002
0.0093
98.97
0.1734
0.0133
92.33
Green Force - plastic
0.1524
0.0060
96.06
0.2127
0.0053
97.51
0.1565
0.0096
93.87
5261 - ceramic
0.1724
0.0098
94.32
0.2865
0.0167
94.17
0.1674
0.0062
96.30
5261 - painted steel
0.1627
0.0181
88.88
0.3113
0.0254
91.84
0.1822
0.0256
85.95
5261 - plastic
0.1890
0.0156
91.75
0.1657
0.0063
96.20
0.1925
0.0043
97.77
Green Works - ceramic
0.2425
0.0083
96.58
0.2274
0.0143
93.71
0.1945
0.0047
97.58
Green Works - painted steel
0.2086
0.0316
84.85
0.1625
0.0409
74.83
0.2931
0.0106
96.38
Green Works - plastic
0.2028
0.0085
95.81
0.3177
0.0102
96.79
0.2606
0.0130
95.01
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Two products had overall average efficiencies greater than 85% and would be considered effective based on the SSL testing methodology.
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