Trial Purpose:
Evaluation of additional cleaners
Date Run:
08/17/2001Experiment Procedure:
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.
