To evaluate selected cleaners on supplied parts using immersion cleaning.
Date Run:
10/17/2006
Experiment Procedure:
Two alternative products were selected from the previous trial based on effectiveness. Each product was diluted to 10% in 250 ml beakers using DI water and heated to 130 F on a hot plate.
Several silver, brass and copper parts were received coated with various buffing compounds. Six parts were cleaned in each solution for five minutes using minimal stir bar agitation. Parts 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, a final observation was made to assess cleanliness.
Trial Results:
Cleaner
Part
Observation
Polyspray Jet 790 XS
Silver Broach
Not completely clean
Silver Bracelet
Looked clean
Silver container
Not completely clean
Silver dolphins
Mostly clean
Silver "coin"
Mostly clean
Brass Jesus
Not completely clean
Detergent 8
Silver money clip
Not completely clean
Silver Marine pin
Looked clean
Silver Ornament
Looked clean
Silver Jesus
Looked clean
Copper fixture
Mostly clean
Brass medal
Not completely clean
Success Rating:
Test incomplete or inconclusive.
Conclusion:
Both cleaning solutions had some success in cleaning the supplied parts. However, not all parts were completely cleaned. Parts have been sent back to the client for analysis.
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