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Trial Number 2

Trial Purpose:

To evaluate selected products on second supplied rust preventative using immersion cleaning at room temperature.

Date Run:

08/04/2008

Experiment Procedure:

The top two products from the previous testing results were selected for further testing. Three other products were included based on vendor recommended information. Two products were diluted to 5% using DI water in 600 ml beakers. One was diluted to 20% and the remaining products were used at full strength. The client's current cleaning solvent was included for comparative purposes.

Twenty-one preweighed steel coupons were coated with rust preventative VCI 369 using a hand held swab. Dirty weights were recorded. Three coupons were cleaned in each product for five minutes using minimal agitation. No rinse was used and coupons were air dried at room temperature. Once dry, final weights were recorded and efficiencies calculated.

Trial Results:

Only one of the alternative cleaning products removed over 70% of the rust preventative using minimal agitation at room temperature. A second product removed just below 60%. The current solvent again removed over 90%. The table lists the amount of soil added, the amount remaining and the efficiency of each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Aquavantage 1400      
  0.0770 0.0785 -1.95
  0.0818 0.0604 26.16
  0.1874 0.1117 40.39
Grease Feast      
  0.1505 0.1018 32.36
  0.1611 0.0873 45.81
  0.1999 0.0763 61.83
Degreasol Formula 99R      
  0.2810 0.0209 92.56
  0.2548 0.0174 93.17
  0.1527 0.0199 86.97
SC Aircraft & Metal cleaner      
  0.2076 0.0915 55.92
  0.2615 0.1180 54.88
  0.2724 0.1002 63.22
Metalnox M6310 DT      
  0.1496 0.0726 51.47
  0.1421 0.0855 39.83
  0.2500 0.0988 60.48
Smart Solve 605      
  0.1545 0.0437 71.72
  0.2585 0.0461 82.17
  0.1824 0.0442 75.77
Green Works Natural All Purpose
  0.2417 0.1128 53.33
  0.2050 0.1134 44.68
  0.2878 0.1259 56.25

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

Due to the limited success of  cleaning products, a new batch of alternative cleaning products will be selected and evaluated on the first two rust preventative. These alternatives will not be aqueous based products. However, the aqueous based products may be successful if some form of agitation or heat is introduced to the cleaning process.

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