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




Surface Solutions Laboratory

Client Information



Client Number 156 (General)


Client Images:

Client Image http://www.cleanersolutions.org/downloads/client_images/156A.jpg    Client Image http://www.cleanersolutions.org/downloads/client_images/156B.jpg    Client Image http://www.cleanersolutions.org/downloads/client_images/156C.jpg    Client Image http://www.cleanersolutions.org/downloads/client_images/156D.jpg   


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

Problems with Current Method: does not achieve brightness

Product Use: window and door hardware

Cleaning Chemicals: Acids

Trial Number Date Run Purpose Success Rating
0 08/14/01 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 08/14/01 Further evaluation of most successful products from first trial A follow up test, usually based on company input. 
2 08/17/01 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 08/22/01 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 09/06/01 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 09/13/01 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 10/17/01 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 10/19/01 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 11/19/01 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.