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




Surface Solutions Laboratory

Trial Report



Trial Number 5

(Client Number 280, Project Number 1)

Trial Purpose: To evaluate effective alternatives on the sixth supplied contaminant.

Date Run: 05/17/07

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

Fifteen preweighed alloy coupons were coated with the sixth contaminant 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 products removed over 92% of the lubricant. Three removed over 95% and one of these (DS 108) 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         0.6604         0.0227         96.56
                      0.7529         0.0258         96.57
                      0.4799         0.0346         92.79
Solsafe 245           0.4885         0.0197         95.97
                      0.5469         0.0269         95.08
                      0.5791         0.0279         95.18
Shopmaster RC         0.4321         0.0467         89.19
                      1.4430         0.0325         97.75
                      0.4722         0.0505         89.31
DS 108                0.4749         0.0130         97.26
                      0.4202         0.0135         96.79
                      0.6765         0.0140         97.93
D Greeze 500 LO       0.3274         0.0223         93.19
                      0.4527         0.0240         94.70
                      0.4694         0.0234         95.01


Success Rating
A follow up test, usually based on company input.

Conclusion
The five products should be retested on the fourth and fifth contaminants with modified operating conditions to improve cleaning efficiency.