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Trial Number 1

Trial Purpose:

To evaluate the efficiency one cleaner on GS 34 Soil-1 and GS 34 Soil- 2 from stainless steel and aluminum coupons using manual wipe technique.

Date Run:


Experiment Procedure:

Two sets of stainless-steel coupons were weighed. The first set was soiled with GS 34 Soil-1 and the other set was soiled with GS 34 Soil-2. Both soils were applied at the loading of ~100mg. The soiled coupons were oven dried for 30 minutes with 40 °C for GS 34 Soil-1 and 105 °C for GS 34 Soil-2. Dirty weights were recorded for all of the coupons.

The Eco Green Heavy-Duty Degreaser was supplied ready to use concentration. Three coupons were placed in a Gardner Straightline Washability unit and spray with a cleaning solution and allowed to soak for 1 minute. After soaking, the unit was run for 20 cycles (33 seconds) followed by a quick spray rinse using tap water at room temperature. Final weights were recorded the following day. Efficiencies were calculated and recorded.

Soil 1: Maintenance soil = 10 grams of carbon black, 10 grams iron oxide, 100 ml WD-40, 100 ml hydraulic oil, and 100 ml gear oil.
Soil 2: Production soil = 200 ml Quench Oil and 200 ml cutting oil

Trial Results:

Cleaner Initial wt Final wt % Removed Average
Maintanance_Aluminum 0.0806 0.0067 91.69 92.06
  0.0831 0.0054 93.50  
  0.0621 0.0056 90.98  
Maintanance_ StainlessSteel 0.1457 0.0075 94.85 95.15
  0.0777 0.0042 94.59  
  0.0848 0.0034 95.99  
Production_Aluminum 0.0868 0.0059 93.20 92.33
  0.0733 0.0066 91.00  
  0.0819 0.0059 92.80  
Production_StainlessSteel 0.1073 0.0034 96.83 96.71
  0.1140 0.0045 96.05  
  0.1420 0.0039 97.25  

Overall Eco Green Heavy-Duty Degreaser:      94.06

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.


The Heavy-Duty Degreaser was very effective in the removal of GS-34 soils. The highest removal efficiency was approximately 97% on the stainless-steel coupons covered in production soil. The lowest removal efficiency was approximately 92% on the aluminum coupons covered in maintenance soil. There was a clear difference in efficiency based on which substrate was used. Stainless steel coupons showed a higher removal efficiency than aluminum coupons.

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