Two new products were selected from the vendor listing based on supplied information. One cleaner from the previous trial was used as a comparison. Parts were cleaned for 40 minutes followed by a tap water rinse at 120 F and dried with a heat gun at 500 F. Observations were made at the end of the trial.
Trial Results:
DuPont's DBE-4 and Ecolink Safe Strip were very effective in removing the paint from the brass parts. The Safe Strip did not tarnish the metal. The following table lists he observations made for each cleaner at 10 minute intervals. The figures show before and after parts.
Cleaner
Time
Observation
Shopmaster
10
dissolving paint
20
some lifting
30
softening paint
40
paint remaining
DBE-4
10
dissolving
20
lifting
30
good cleaning
40
nearly all paint gone
Safe Strip
10
dissolving and lifting
20
bright metal
30
good cleaning
40
all paint gone, not tarnished
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Two products removed all or nearly all of the paint within the 40 minutes of soaking. These two products did not cause the brass parts to become dark, although they did not improve the brightness.
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