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Trial Number 381

Client Number 153

Project Number 1

Trial Purpose:

Laboratory evaluations of alternative aerosol cleaning products

Date Run:

12/13/2006

Experiment Procedure:

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

Six products were selected for testing based on previous testing on the selected soil. One product was used to 5% using DI water and 500 mlsThe other five products were used at full strength. Each product was then poured into an EnviroCaddie aerosol spray system and pressurized to just under 95 psi using Nitrogen. Eighteen preweighed aluminum coupons were coated with a collection of brake/engine soil collected from an automobile shop. The coupons were allowed to sit for one day before a second weight was recorded. Three coupons were cleaned with each solution for 30 seconds via the aerosol spray system. Coupons were not rinsed and were air dried at room temperature for 5 minutes. Following drying, final weights were recorded and cleaning efficiencies were calculated.

Trial Results:

All six products removed over 89% of the brake soil in under 30 seconds of spray cleaning. A couple of the products took longer to dry or left a small amount of liquid at the bottom of the coupons. Wiping the water off the coupons resulted in cleaning efficiencies above 99%. The table below lists the amount of soil applied, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed Observations
278 SuperSolv 0.5905 0.0306 94.82  
  0.5332 0.0403 92.44  
  0.3372 0.0424 87.43  
DS 104 1.1535 0.0249 97.84 Wet at bottom
  0.1811 0.0306 83.10  
  0.5954 0.0251 95.78  
D Greeze 500 Lo 0.2987 0.0237 92.07  
  0.5740 0.0068 98.82  
  0.5692 0.0179 96.86  
Solsafe 245 0.1652 0.0220 86.68 Wet at bottom
  0.2401 0.0246 89.75 99% with wipe
  0.3442 0.0311 90.96  
Brakleen-Non Aerosol 0.2832 0.0141 95.02  
  0.2766 0.0064 97.69  
  0.2372 0.0047 98.02  
Brake & Parts Cleaner 0.3012 0.0047 98.44  
  0.2709 0.0113 95.83  
  0.2435 0.0054 97.78  

Success Rating:

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

Conclusion:

Some of the alternatives may need to be wiped dry. Despite the residue, all cleaners removed over 89% of the brake soil.

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