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Trial Number 4

Trial Purpose:

To evaluate products on a second contaminant

Date Run:

07/23/2004

Experiment Procedure:

Three products were selected from the previous trial. All products were used as received from the client in 400 ml beakers. All three products were heated to 120 F on a hot plate. Nine preweighed aluminum coupons were coated with client supplied coating, Castrol Industries Rustilo DW 924 (64742-88-7, 64742-95-6, 64741-89-5, 64741-97-5, 64742-53-6, 95-63-6), using a hand held swab and then weighed a second time to determine the amount of soil added. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. Coupons were rinsed in tap water for 15 seconds at 120 F, followed by air blow off at room temperature. Once dry, coupons were weighed a final time and efficiencies for each cleaner were calculated.

Trial Results:

The same two products that damaged the coupons in the previous trial also caused problems in this trial. The Alkalume removed nearly all of the coating, removing over 99.9%. 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
Ro-Prepp R 0.166 -0.0264 115.9
Cleppo 587A 0.2282 -0.0115 105.04
Alkalume LN 0.1651 0.0014 99.15
  0.1885 -0.0004 100.21
  0.2597 -0.0009 100.35

Success Rating:

A follow up test, usually based on company input.

Conclusion:

Only the Alkalume will be tested on the third soil.

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