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Trial Number 461

Trial Purpose:

To test nontoxic industrial cleaning solutions for oil removal

Date Run:

11/25/2008

Experiment Procedure:

Products were selected based on the compatibility of substrate and removal of foreign substance. Used 5% concentration and heated the samples at 135F. The steel coupons were immersed in a product for 5 minutes, rinsed for 30 seconds in tap water at 120F and dried in 30 seconds using compressed air is room temperature.

Coupons were coated with used oil. Using a handheld swab and allowed to dry for 144 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
SW 6      
  0.0625 0.0179 71.36
  0.0516 0.0216 58.14
  0.0410 0.0121 70.49
Metalnox M6410      
  0.0243 0.0119 51.03
  0.0306 0.0152 50.33
  0.0353 0.0190 46.18
Daraclean 203      
  0.0600 0.0247 58.83
  0.0267 -0.0016 105.99
  0.0382 0.0074 80.63
Daraclean 257      
  0.0447 0.0125 72.04
  0.0600 0.0125 79.17
  0.0384 0.0150 60.94
Metalnox M6432      
  1.1187 1.0446 6.62
  0.0550 0.0090 83.64
  0.0914 0.0088 90.37

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 tapping fluid using immersion cleaning.

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