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Toxics Use Reduction Institute · Surface Solutions Laboratory
 
Toxics Use Reduction Institute




Surface Solutions Laboratory

Trial Report



Trial Number 3

(Client Number 280, Project Number 1)

Trial Purpose: To evaluate top alternatives on third supplied contaminant.

Date Run: 05/16/07

Experiment Procedure:
Five products from the previous trial were selected and used at full strength based on past performance. The cleaning solutions were all heated to 130 F on a hot plate.

Fifteen preweighed alloy coupons were coated with the third supplied lubricant and weighed a second time to determine the amount of contaminant added to each coupon. Three coupons were immersed into each solution and cleaned for 5 minutes using stir-bar agitation. Coupons were rinsed in room temperature tap water for 15 seconds and air dried using compressed dry air for 30 seconds. A final weight was recorded and efficiencies were calculated for each coupon cleaned.

Trial Results
All five of the products removed over 90% of the lubricant. All but one removed over 95% and two of these removed over 97%. 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
Soy Gold 1100          0.4782          0.0441          90.78
                       0.3664          0.0353          90.37
                       0.4703          0.0279          94.07
Solsafe 245            0.4263          0.0187          95.61
                       0.5162          0.0109          97.89
                       0.5374          0.0425          92.09
Shopmaster RC          0.3993          0.0263          93.41
                       0.4303          0.0141          96.72
                       0.5563          0.0203          96.35
DS 108                 0.3071          0.0107          96.52
                       0.3295          0.0097          97.06
                       0.3694          0.0078          97.89
D Greeze 500 LO        0.5063          0.0146          97.12
                       0.4665          0.0085          98.18
                       0.3407          0.0133          96.10


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

Conclusion
The effective products will be tested on the fourth supplied contaminant following the same laboratory procedures.