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




Surface Solutions Laboratory

Trial Report



Trial Number 0

(Client Number 269, Project Number 1)

Trial Purpose: To evaluate selected alternatives to TCE for removing oil from brass using immersion cleaning.

Date Run: 09/11/06

Experiment Procedure:
Six alternative products were selected from the lab's database of testing results based on supplied client information. Products were selected based on oil removal potential and compatibility with brass metal substrate. Each product was diluted to 5% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Eighteen preweighed coupons were coated with the supplied oil using a hand held swab after. Coupons were weighed a second time to determine the amount of oil added. Three coupons were cleaned in each solution for five minutes using minimal stir bar agitation. Coupons were rinsed for 15 seconds in a tap water bath at 120 F and dried using a dry compressed air for 30 seconds. Once dry coupons were weighed a final time and product efficiencies were calculated.

Trial Results
All six products selected removed over 90% of the oil within 5 minutes of immersion cleaning. One product, Sea Wash Blue removed over 99%. It was
noted that this product may have tarnished the brass coupons. The following table lists the amount of buffing compound applied, the amount remaining
and the efficiency for each coupon cleaned.

Cleaner                  Initial wt  Final wt   % Removed
Aquavantage 1400          0.0721      0.0008      98.89
                          0.2329      0.0052      97.77
                          0.1109      0.0066      94.05
Surface Cleanse 930       0.1750      0.0134      92.34
                          0.2261      0.0103      95.44
                          0.2013      0.0086      95.73
SeaWash Blue              0.1913      0.0021      98.90
                          0.1011      0.0015      98.52
                          0.1031      0.0003      99.71
Inproclean 3800           0.2779      0.0108      96.11
                          0.1860      0.0146      92.15
                          0.2444      0.0168      93.13
Polyspray Jet 790 XS      0.1899      0.0128      93.26
                          0.2839      0.0148      94.79
                          0.1220      0.0121      90.08
Daraclean 283             0.1923      0.0081      95.79
                          0.1953      0.0070      96.42
                          0.2723      0.0100      96.33


Success Rating
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion
The six products will be retested at shorter cleaning time using ultrasonic energy.