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Trial Number 482

Trial Purpose:

To remove graffiti from stainless steel using immersion cleaning

Date Run:

03/10/2009

Experiment Procedure:

Products were selected based on the compatibility of substrate and for removal of the contaminant. Five percent concentrations were used and heated the samples at 130F. The coupons were immersed in a product for 5 minutes, rinsed in tap water at 120 F and dried using compressed air at room temperature.

Coupons were coated with the contaminant using a handheld swab and allowed to dry for 120 minutes at room temperature. The contaminated coupons were weighed again to determine the amount of soil added. After cleaning process the final weights were recorded, efficiencies were calculated and recorded.

Trial Results:

Cleaner Initial Wt. Final Wt. % Removed
Shopmaster  0.3151 0.0008 99.75
0.0154 -0.0001 100.65
0.0109 0.0057 47.71
       
Citranox 0.0817 0.0576 29.5
0.0415 0.0342 17.59
0.0197 0.0077 60.91
       
Coil Bright 0.1169 0.0576 50.73
0.0465 0.0187 59.78
0.0511 0.0208 59.3
       
Soy Strong 0.0157 0.008 49.04
0.0194 0.0186 4.12
0.0171 0.0031 81.87
       
Inproclean 3800 0.015 0.0106 29.33
0.0162 0.0027 83.02
0.0632 0.0181 71.36
       
Graffiti Remover 0.1507 0.0294 80.49
0.0235 0.0034 85.53
0.0415 0.0187 54.94
       
 Metal Bright                         0.499 0.4507 9.68
0.2321 0.2004 13.66
0.1772 0.1301 26.58
       
Phosphoric Acid Cleaner #1                          0.1612 0.1597 0.93
0.1567 0.1049 33.06
0.0919 0.0355 61.37

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.

Conclusion:

No product removed over 85% of the graffiti from stainless steel using immersion cleaning.

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