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Trial Number 5

Trial Purpose:

To evaluate top five products on fifth supplied contaminant using manual cleaning

Date Run:

11/05/2009

Experiment Procedure:

Five products from the previous trials were selected based on performance. All were used at room temperature. Two alkaline aqueous cleaners were diluted to 5% using DI water in 300 ml beakers. Three cleaners were used at full strength. Fifteen preweighed aluminum coupons were coated with Mobile DTE light oil using a hand held swab. The contaminated coupons were weighed again to determine the amount of soil added.

Each cleaner tested with three coupons. Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly Clark Reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 3 times with the same cleaning solution. First, Coupon was cleaned for 15 cycles two times; after coupon was cleaned for 15 cycles, experimenter changed the paper towel and soaked with 5 spray of same cleaning solution. At the end of the cleaning, coupons were dried at room temperature naturally. Final weights were recorded and efficiencies were calculated and recorded.

Trial Results:

Two of the five worked very well on the light oil, removing more than 93%. Two other products removed just under 85%. The Activeion unit had the lowest efficiency at 74%. However, two of the three coupons had removal rates higher than 90% and one lower then 40%. A reevaluation of this product will be conducted to determine effectiveness. The table lists the amount of oil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Shopmater RC 100%      
  0.049 0.0097 80.2
  0.0379 0.0065 82.85
  0.0312 0.0043 86.22
SC Aircraft metal cleaner 5%    
  0.0246 0.0008 96.75
  0.0271 0.0011 95.94
  0.0208 0.0004 98.08
Solsafe 245 100%      
  0.0199 0.0016 91.96
  0.0265 0.0058 78.11
  0.0332 0.0067 79.82
Detergent 8 5%      
  0.0276 0.0021 92.39
  0.0275 0.0021 92.36
  0.0285 0.0016 94.39
Activeion      
  0.0322 0.0031 90.37
  0.0232 0.0016 93.1
  0.0271 0.0164 39.48

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Based on past performance on the previous four contaminants, all five products will be tested on the fifth supplied contaminant under the same conditions.

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