To find the best fit product for cleaning Leach Garner’s #9 Marvel Mystery from copper and stainless steel surfaces meant to resemble the cleaning of precious metals.
Date Run:
09/25/2016
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
Substrate
Initial wt.
Final wt.
% Cont Removed
% Overall
FluoSolv CX
Stainless
0.0559
0.0046
91.77
Stainless
0.0635
0.0044
93.07
92.90
Stainless
0.0667
0.0041
93.85
Copper
0.0545
0.0041
92.48
Copper
0.0479
0.0039
91.86
92.16
Copper
0.0508
0.0040
92.13
Fluosolv NC
Stainless
0.0339
0.0037
89.09
Stainless
0.0951
0.0083
91.27
90.41
Stainless
0.0471
0.0043
90.87
Copper
0.0590
0.0049
91.69
Copper
0.0667
0.0045
93.25
92.28
Copper
0.0494
0.0040
91.90
Vertrel Sion
Stainless
0.0786
0.0010
98.73
Stainless
0.0567
0.0002
99.65
99.38
Stainless
0.0433
0.0001
99.77
Copper
0.0323
0.0012
96.28
Copper
0.0382
0.0011
97.12
97.39
Copper
0.0804
0.0010
98.76
Solstice PF
Stainless
0.0384
0.0000
100.00
Stainless
0.0448
0.0005
98.88
99.32
Stainless
0.0216
0.0002
99.07
Copper
0.0377
0.0000
100.00
Copper
0.0346
0.0002
99.42
99.59
Copper
0.0459
0.0003
99.35
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The cleaners selected worked well in dissolving the oil. There was some filming and streaking present, especially with FluoSolv CX and FluoSolv NC. Vertrel Sion and Solstice PF were the better of the cleaners, even though they did have some streaking and some residue in the case of Solstice PF. Of the two better cleaners, Vertrel Sion showed the least visual streaking.
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