One copper tube was used for each cleaner. The ultrasonics tank and the cleaners were heated prior to testing. Shopmaster, Mriachem 500, and SC-Aircraft were heated to 140 F and Water Works was heated to 105 F. The copper tubes were weighed for initial weights and then soiled with the Oak 15C oil by dipping them in the oil and hanging the tubes to remove excess oil. Once the excess oil was removed, the tubes were weighed for dirty weights. The tubes were then put, into their designated cleaner and tested for 15 minutes in the ultrasonics tank. They were allowed to dry overnight and then weighed for clean weights.
Once it was determined which cleaners removed the Oak 15C oil, the tubes were then tested using the same method with the Oak 15A-1 oil.
Trial Results:
All cleaners removed the Oak 15C oil at a 99% or higher effectiveness. They were all tested for the removal of 15A-1. Visually all tubes were clean after the second test, but gravimetrically Mirachem 500 and Water Works out performed Shopmaster and SC-Aircraft. Shopmaster also changed the coloring of the copper tubing and may not be compatible.
1. Results from the Oak 15C test
Cleaner
Initial wt. of cont.
Final wt. of cont.
Average
Shopmaster
0.2080
0.0006
99.71
Mirachem 500
0.1435
0.0013
99.09
Water Works
0.1361
0.0008
99.41
SC-Aircraft
0.2407
0.0001
99.96
2. Results from the Oak 15A-1 test
Cleaner
Initial wt. of cont.
Final wt. of cont.
Average
Shopmaster
0.1004
0.0247
75.40
Mirachem 500
0.1086
-0.0007
100.64
Water Works
0.1489
0.0006
99.60
SC-Aircraft
0.0778
0.0266
65.81
Success Rating:
A follow up test, usually based on company input.
Conclusion:
Next steps are to continue testing with Mirachem 500 and Water Works and keep SC-Aircraft ready to test again. Also to start testing on additional oils and substrates provided by the company.
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