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Project Number 1

Summary:

Part of a joint venture between EPA, TURI and RI DEM to reduce the use of TCE in the Providence, RI area, five trials were conducted on this client’s buffing compounds. A 10% solution of Polyspray Jet 790 XS at the 150 F was the only product that was successful in cleaning the three part types supplied for cleaning. Parts have been sent back to the client for evaluation.

Test Objective:

To find an alternative to TCE for removing buffing compounds from brass parts.

Product Use:

Medals, decorative products

Trial Number	Date Run	Purpose	Success Rating
0	08/16/2006	To evaluate selected products for buffing compound removal.	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
1	08/17/2006	To evaluate previously tested products using ultrasonic energy.	A follow up test, usually based on company input.
2	08/17/2006	To evaluate top two products at higher temperature to achieve higher efficiencies.	A follow up test, usually based on company input.
3	08/22/2006	To evaluate cleaners on water-based buffing compound using immersion cleaning.	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
4	10/16/2006	To evaluate selected product for cleaning supplied parts using ultrasonic energy	Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
5	12/08/2006	To evaluate selected product for cleaning both buffing compound and oil using supplied parts.	Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
6	02/06/2007	To determine if temperature or concentration were the cause for the tarnish seen on the parts cleaned during the on-site piloting.	A follow up test, usually based on company input.
7	02/06/2007	To evaluate two most effective products found for this client for tarnishing effect with solution at room temperature.	A follow up test, usually based on company input.
8	02/07/2007	To evaluate new, lower pH cleaners for cleaning brass parts that have been tarnishing with the previous cleaners we found that were effective.	A follow up test, usually based on company input.
9	02/07/2007	To evaluate selected products on a wide range of client selected parts for cleaning and tarnishing.	A follow up test, usually based on company input.

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Client #262