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Trial Number 7

Trial Purpose:

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

Date Run:

11/04/2009

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 Texaca Rando HD22-88 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 worked well on the oil, removing more than 85%. 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%      
  0.0509 0.0095 81.34
  0.0307 0.0021 93.16
  0.0373 0.0024 93.57
SC Aircraft metal cleaner 5%    
  0.0255 0.0092 63.92
  0.0276 0.0013 95.29
  0.0126 0.0008 93.65
Solsafe 245 100%      
  0.1292 0.0047 96.36
  0.0506 0.0065 87.15
  0.0438 0.0021 95.21
Detergent 8 5%      
  0.0403 0.0050 87.59
  0.0539 0.0027 94.99
  0.0217 0.0021 90.32
Activeion      
  0.0537 0.0060 88.83
  0.0559 0.0039 93.02
  0.0322 0.0064 80.12

Success Rating:

A follow up test, usually based on company input.

Conclusion:

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

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