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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