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Trial Number 474

Trial Purpose:

To remove graphite from plastic surfaces

Date Run:

02/10/2009

Experiment Procedure:

Basic cleaning performance testing was conducted using ASTM G122 as the bases for cleaning. 

Products were selected based on the compatibility of substrate and for removal of the contaminant. Ten 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 graphite 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
Sea wash      
  0.0083 0.0078 6.02
  0.0067 0.0049 26.87
  1.0046 0.0038 99.62
Simple Green      
  0.0044 0.0041 6.82
  0.0073 0.0080 -9.59
  0.0038 0.0031 18.42
Micro 90      
  0.0037 0.0090 -143.24
  0.0049 0.0052 -6.12
  0.0061 0.0083 -36.07
Sc Aircraft &Metal      
  0.0020 0.0018 10.00
  0.0054 0.0052 3.70
  0.0083 0.0404 -386.75
Sky Gold 1000      
  -0.9965 0.0297 102.98
  0.0074 0.0638 -762.16
  0.0076 0.0185 -143.42
Maxisolv      
  0.0035 0.0098 -180.00
  0.0091 0.0125 -37.36
  0.0033 0.0062 -87.88
SWR One      
  0.0038 0.1547 3971.05
  0.0035 -0.1436 4202.86
  0.0126 0.0143 -13.49

Success Rating:

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

Conclusion:

Results were inconclusive with many of the products have erratic removal rates.

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