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Trial Number 4

Client Number 295

Project Number 1

Trial Purpose:

To evaluate possible alternatives for solvent cleaning of oil

Date Run:

02/22/2008

Experiment Procedure:

Four new product samples of solvents used for hand dipping applications at room temperature were chosen for testing as a Possible substitute for the clients current cleaning solvent.

Twelve preweighed coupons were coated with Hangsterfer Laboratories Hard Cut 5418 cutting fluid using a handheld swab. The contaminated coupons were weighed a second time to determine the amount of soil added. Three coupons were immersed into each cleaning solution and manual raised and lowered in the cleaning solution to provide minimal mechanical agitation. After one minute of cleaning, the coupons were removed and dried for 30 seconds using compressed air at room temperature. Following air drying, the coupons were weighed a final time to determine the amount of soil remaining. Efficiency for each coupon was determined and average cleaning results for each product were calculated.

Trial Results:

All four products removed over 99% of the cutting fluid within one minute of mechanical agitation. The table below lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Dysol 104 0.0905 0.0000 100.00
  0.3772 0.0001 99.97
  0.1678 0.0000 100.00
Dysol 108 0.2693 0.0001 99.96
  0.1535 0.0000 100.00
  0.2320 0.0001 99.96
Dysol 144 0.2583 0.0000 100.00
  0.2907 0.0001 99.97
  0.2034 0.0000 100.00
Dysol 800 0.3171 0.0000 100.00
  0.2847 0.0000 100.00
  0.2142 0.0001 99.95

Success Rating:

Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.

Conclusion:

The four products will be used in further testing on client supplied parts.

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