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Trial Number 4

Trial Purpose:

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

Date Run:

11/03/2009

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 25 oil using a handheld 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:

Four of the products removed more than 90% of the oil from the aluminum coupons using simulated manual cleaning. The fifth removed less than 80%. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Shopmater RC 100%      
  0.0428 0.0129 69.86
  0.0439 0.0085 80.64
  0.0346 0.0091 73.70
SC Aircraft metal cleaner 5%    
  0.0178 0.0010 94.38
  0.0165 0.0026 84.24
  0.0199 0.0008 95.98
Solsafe 245 100%      
  0.0302 0.0021 93.05
  0.0295 0.0022 92.54
  0.0211 0.0014 93.36
Detergent 8 5%      
  0.0151 0.0016 89.40
  0.0148 0.0009 93.92
  0.0179 0.0015 91.62
Activion      
  0.0421 0.0022 94.77
  0.0290 0.0008 97.24
  0.0341 0.0019 94.43

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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