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Trial Number 2

Trial Purpose:

To evaluate top products from previous trial on second supplied contaminant.

Date Run:


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 24 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:

All five products removed more than 85% of the oil from the aluminum coupons using simulated manual cleaning. 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%      
  0.0603 0.0035 94.2
  0.0573 0.0094 83.6
  0.046 0.0067 85.43
SC Aircraft metal cleaner 5%    
  0.0308 0.0021 93.18
  0.0317 0.0017 94.64
  0.0295 0.0023 92.2
Solsafe 245 100%      
  0.0604 0.0023 96.19
  0.0343 0.0017 95.04
  0.0253 0.0000 100.00
Detergent 8 5%      
  0.0331 0.0014 95.77
  0.0277 0.0015 94.58
  0.0259 0.0015 94.21
  0.0433 0.0018 95.84
  0.0378 0.0034 91.01
  0.0315 0.0026 91.75

Success Rating:

A follow up test, usually based on company input.


The same five products will be tested on the third supplied soil under the same conditions.

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