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Trial Number 8

Trial Purpose:

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

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 Lennox synthetic lubricant 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 95%.  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%      
  0.0713 0.0007 99.02
  0.0750 0.0005 99.33
  0.0800 0.0011 98.62
SC Aircraft metal cleaner 5%    
  0.0978 0.0039 96.01
  0.0859 0.0008 99.07
  0.0650 0.0000 100.00
Solsafe 245 100%      
  0.1140 0.0052 95.44
  0.0783 0.0033 95.79
  0.0786 0.0011 98.60
Detergent 8 5%      
  0.0602 0.0005 99.17
  0.0558 0.0005 99.10
  0.0572 -0.0017 102.97
  0.0547 0.0003 99.45
  0.0709 0.0088 87.59
  0.0595 -0.0018 103.03

Success Rating:

A follow up test, usually based on company input.


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

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