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Trial Number 374

Trial Purpose:

Laboratory evaluations of alternative aerosol cleaning products

Date Run:

10/12/2006

Experiment Procedure:

One product was retested from the previous trial at a higher concentration. An additional two products also were selected for testing based on equipment compatibility and soil removal. The three products were used at full strength in 250 ml beakers. Products were used at room temperature.

Nine preweighed aluminum coupons were coated with a collection of brake/engine soil collected from an automobile shop. The coupons were allowed to sit for several days before a second weight was recorded. Three coupons were cleaned in each solution for 5 minutes using minimal agitation from a magnetic stir bar. Coupons were then rinsed in tap water for 15 seconds and dried using air blow off at room temperature for 30 seconds. Following drying, final weights were recorded and cleaning efficiencies were calculated.

Trial Results:

The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Inproclean 4000T 0.6415 0.5512 14.08
  0.7043 0.4902 30.4
  0.6545 0.5704 12.85
Organic Clean-Degreaser 0.6544 0.5537 15.39
  0.4955 0.4327 12.67
  0.9758 0.8654 11.31
Ionox HC 2 0.3976 0.3644 8.35
  0.6769 0.6062 10.44
  0.9009 0.8154 9.49

Success Rating:

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

Conclusion:

The products did not work well at room temperature using immersion cleaning.

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