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Trial Number 5

Trial Purpose:

To find the best fit product for cleaning Leach Garner’s XXAluminum #19 from copper and stainless steel surfaces meant to resemble the cleaning of precious metals.

Date Run:


Experiment Procedure:

Coupons of stainless steel and copper were selected and arranged on trays, so that each cleaner had an assigned set of each surface. Before taking initial weights coupons were wiped down with Kimwipes. After taking weights the coupons were promptly soiled and reweighed. All cleaners were gathered in respective bottles and beakers. A stir bar was used in conjunction with a heating plate equipped to stir the solutions. The coupons were added to the beakers three of a kind at one time, and then allowed to sit in the stirred solution at room temperature for 5 minutes while observations were taken. Finally, clean weights were taken at the end of all the testing.

Trial Results:

Cleaner Initial wt of cont. Final wt of cont. %Cont Removed
FluoSolv CX 0.0328 0.0027 91.77
  0.0337 0.0026 92.28
  0.0479 0.0007 98.54
FluoSolv NC 0.0361 0.0115 68.14
  0.0497 0.0106 78.67
  0.0347 0.0095 72.62
Vertrel Sion 0.0242 0.0035 85.54
  0.0200 0.0043 78.50
  0.0388 0.0044 88.66
Solstice PF 0.0447 0.0020 95.53
  0.0329 0.0030 90.88
  0.0285 0.0029 89.82

Success Rating:

Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.


The testing of various cleaners on aluminum, concluded that FluoSolv CX was the best cleaner, followed by the Honeywell Solstice PF product. The oil was very lightweight and thus came off quite easily. There were some cleaners which removed the cleaner but left behind some residue or film on the coupons. Unlike with other testing, the DuPont product did not perform as well as it usually does.

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