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




Surface Solutions Laboratory

Trial Report



Trial Number 4

(Client Number 276, Project Number 1)

Trial Purpose: To evaluate successful semi-aqueous products using ultrasonic cleaning.

Date Run: 03/09/07

Experiment Procedure:
Seven products were selected from previous trial based on effectiveness. Three products were diluted to 10% using DI water and four were used at full strength in 600 ml beakers. Each solution was heated to 130 F in a Crest 40 kHz ultrasonic tanked filled with water. The solutions were degassed for 5 minutes.
Twenty-one preweighed coupons were coated with Jackonslea Grey Color 305 A (1344-28-1) by heating the buffing compound to facilitate transfer to the stainless steel coupons. Once cooled, coupons were weighed again to determine the amount of buffing compound applied. Three coupons were cleaned in each solution for 1 minute using 40 kHz ultrasonic cleaning. Coupons were rinsed for 15 seconds in 120 F tap water and dried using compressed air at room temperature for 30 seconds. Coupons were weighed a third time to determine the amount of soil remaining and efficiencies were calculated for each coupon cleaned.

Trial Results
Five of the seven products removed over 90% of the buffing compound in one minute of ultrasonic cleaning. The SC Supersolve and Soy Gold 2000 removed
under 75%. The table lists the amount of buffing compound applied, the amount remaining after cleaning and the efficiency for each coupon cleaned.

Cleaner            Initial wt    Final wt     % Removed
SC Supersolve       0.4877       0.1757       63.97
                    0.5796       0.2421       58.23
                    0.2359       0.0151       93.60
Bio T Max           0.1241       0.0178       85.66
                    0.4573       0.0184       95.98
                    0.2438       0.0225       90.77
Solsafe 245         0.3111       0.0179       94.25
                    0.3448       0.0264       92.34
                    0.4383       0.0654       85.08
DS 104              0.4908       0.0861       82.46
                    0.3434       0.0244       92.89
                    0.4298       0.0202       95.30
Optisolv OP7168     0.2951       0.0118       96.00
                    0.3164       0.0428       86.47
                    0.3153       0.0187       94.07
Soy Gold 2000       0.6081       0.2442       59.84
                    0.5184       0.1181       77.22
                    0.7174       0.2157       69.93
D Greeze 500 Lo     0.6484       0.0741       88.57
                    0.5876       0.0294       95.00
                    0.4084       0.0306       92.51


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

Conclusion
The five effective products will be tested on supplied dirty parts using ultrasonic cleaning.