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Project Number 1

Summary:

Semi-aqueous products were successful in removing paint from the brass parts, but have not yielded a bright finish. Baking soda media blasting removed the paint and resulted in a dull finish. Acidic aqueous parts have been evaluated for brightening.

Test Objective:

Cleaning Hardware to a bright finish

Product Use:

window and door hardware

Trial Number	Date Run	Purpose	Success Rating
0	08/14/2001	To identify potential cleaning formulations for cleaning brass parts	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
1	08/14/2001	Further evaluation of most successful products from first trial	A follow up test, usually based on company input.
2	08/17/2001	Evaluation of additional cleaners	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
3	08/22/2001	To evaluate high pressure spray wash for paint removal	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
4	09/06/2001	To evaluate media blasting for paint removal	Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
5	09/13/2001	To identify products that will brighten the brass parts after removing the paint.	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
6	10/17/2001	Second attempt to identify products that will brighten the brass parts after removing the paint.	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
7	10/19/2001	Third attempt to identify products that will brighten the brass parts after removing the paint.	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
8	11/19/2001	Evaluation of additional cleaners for brass brightening	Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

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