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Toxics Use Reduction Institute · Surface Solutions Laboratory
 
Toxics Use Reduction Institute




Surface Solutions Laboratory

Trial Report



Trial Number 370

(Client Number 153, Project Number 1)

Trial Purpose: Laboratory evaluations of alternative aerosol cleaning products

Date Run: 08/29/06

Experiment Procedure:
Eight products were selected for testing based on equipment compatibility and soil removal. Products needed to be able to be used in a pressure spray wash system for the removal of oil, grease and carbon contaminants. All eight products were diluted to 5% using DI water in 600 ml beakers. Products were used at room temperature.

Twenty-four 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
SC Aircraft              0.4983     0.4560      8.49
                         0.2890     0.2706      6.37
                         0.3818     0.3649      4.43
Shopmaster HP            0.4513     0.4402      2.46
                         0.4281     0.4197      1.96
                         0.2291     0.2134      6.85
Hydroforce Butyl Free    0.3552     0.3367      5.21
                         0.3141     0.2962      5.70
                         0.5485     0.5393      1.68
Aquavantage 3800 GD      0.3729     0.3585      3.86
                         0.4222     0.4040      4.31
                         0.3187     0.3054      4.17
Heavy Wt Non Butyl       0.5421     0.5271      2.77
                         0.3828     0.3602      5.90
                         0.1620     0.1466      9.51
Cal Parts Washer         0.2553     0.2295     10.11
                         0.1560     0.1252     19.74
                         0.2841     0.2126     25.17
New Dimension LF        0.1795     0.1704      5.07
                         0.1852     0.1806      2.48
                         0.1330     0.1270      4.51
LF 2100                  0.2552     0.2508      1.72
                         0.2786     0.2745      1.47
                         1.1507     1.1413      0.82


Success Rating
Lab evaluation based on vendor data.

Conclusion
Only one of the eight products showed any signs of removing the oil/grease/carbon soil mix. This product, California Parts Washer, will be retested at a higher concentration.