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Trial Number 2

Trial Purpose:

To evaluate top six products on third supplied contaminant using immersion cleaning.

Date Run:

10/09/2008

Experiment Procedure:

The top six products based on past testing results were again diluted to 5% using DI water in 400 ml beakers. All six products were heated to 130 F on a hot plate. Peweighed aluminum coupons were coated with the Hagsterfer's Crystal Brite EDM oil using a handheld swab. The contaminant was allowed to dry for about 10 minutes. Once dry, the coupons were weighed a second time to determine the amount of oil applied.

Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Rinsing was performed for 15 seconds using tap water heated to 120 F and followed by 30 seconds of air blow off with dry compressed air at room temperature. Final weights were recorded, and efficiencies were calculated for each coupon cleaned.

Trial Results:

All six products were effective at removing the EDM oil from the aluminum coupons within 5 minutes of immersion cleaning. Five of the six removed over 99% of the EDM fluid. The sixth removed over 97%. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Green Soak 0.1438 -0.0032 102.23
  0.1488 -0.0015 101.01
  0.1299 -0.0017 101.31
Shopmaster LpH 0.1456 -0.0002 100.14
  0.1616 -0.0001 100.06
  0.1559 0.0004 99.74
FPC 100 0.1695 0.0003 99.82
  0.1720 0.0002 99.88
  0.1808 0.0001 99.94
SC Aircraft & Metal Cleaner 0.1720 0.0062 96.40
  0.1774 -0.0009 100.51
  0.1890 -0.0002 100.11
Amberclean L12 0.1733 0.0000 100.00
  0.1606 0.0017 98.94
  0.1917 0.0003 99.84
Ozzy Juice SW-3 0.1952 0.0042 97.85
  0.1989 0.0048 97.59
  0.1579 0.0043 97.28

Success Rating:

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

Conclusion:

The top products will be evaluated on the fourth supplied contaminant under the same cleaning conditions.

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