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Trial Number 1

Trial Purpose:

To evaluate selected cleaners on second supplied contaminant

Date Run:

04/16/2004

Experiment Procedure:

Six products were selected based on client request for vapor degreasing solvents. Each product was used at full strength in a 250 ml beaker and heated to 96 F on a hot plate. Eighteen preweighed aluminum coupons were coated with the Cargill, Inc Canola Oil (120962-03-0) using a hand held swab. Coupons were weighed a second time to determine the amount of soil added to each coupon. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. After cleaning parts were allowed to sit for 10 minutes for drying at room temperature. The coupons were weighed a final time and efficiencies were calculated.

Trial Results:

Two of the six products were successful in removing over 85% of the soil in five minutes of immersion. Many of the coupons were found to have residual oil on the back side of the coupons. This resulted when coupons were removed from the beakers (dragging through accumulated oil on the surface). The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
HFE 7100 0.0723 0.0514 28.91
  0.1305 0.0503 61.46
  0.1846 0.0547 70.37
HFE 7200 0.1328 0.0754 43.22
  0.1749 0.0853 51.23
  0.1551 0.0427 72.47
HFE 71DE 0.1406 0.0202 85.63
  0.1542 0.0221 85.67
  0.1537 0.0183 88.09
AK 225 0.1825 0.0803 56.00
  0.2454 0.0690 71.88
  0.1676 0.0135 91.95
Vertrel CCA 0.1427 0.0426 70.15
  0.1321 0.0094 92.88
  0.1795 0.0070 96.10
Vertrel MCA 0.1571 0.0333 78.80
  0.1153 0.0297 74.24
  0.1250 0.0233 81.36

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 same products will be tested on the third supplied oil under the same conditions.

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