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Trial Number 5

Trial Purpose:

To evaluate possible alternatives for solvent cleaning of oil

Date Run:


Experiment Procedure:

Two new product samples of solvents recently received were tested at room temperature to use as a possible substitute for the clients current cleaning solvent.

Six 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 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:

Metalnox M6381 removed over 99% of the cutting fluid within one minute. The M6310 removed over 85% of the cutting fluid within one minute. The table below lists the amount of oil added, the amount remaining and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
Metalnox M6381 0.3170 0.0017 99.46
  0.3319 0.0000 100.00
  0.3769 0.0006 99.84
Metalnox M6310 0.2933 0.0520 82.27
  0.3380 0.0510 84.91
  0.5223 0.0542 89.62

Success Rating:

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


The two products may be used in further testing on client supplied parts.

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