To find the best fit product for cleaning Leach Garner’s #1 Masterdraw from copper and stainless steel surfaces meant to resemble the cleaning of precious metals.
Date Run:
09/08/2016
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
0.0727
0.0037
94.91
Stainless
0.0395
0.0034
91.39
94.03
Stainless
0.0810
0.0034
95.80
Copper
0.1005
0.0037
96.32
Copper
0.0460
0.0031
93.26
95.13
Copper
0.0861
0.0036
95.82
FluoSolv NC
Stainless
0.0884
0.0034
96.15
Stainless
0.0436
0.0025
94.27
95.45
Stainless
0.0689
0.0028
95.94
Copper
0.0865
0.0018
97.92
Copper
0.0588
0.0026
95.58
95.68
Copper
0.0790
0.0051
93.54
Vertrel Sion
Stainless
0.0681
0.0019
97.21
Stainless
0.0451
0.0036
92.02
95.48
Stainless
0.0644
0.0018
97.20
Copper
0.0965
0.0016
98.34
Copper
0.0880
0.0017
98.07
98.19
Copper
0.0760
0.0014
98.16
Solstice PF
Stainless
0.0572
0.0037
93.53
Stainless
0.1256
0.0039
96.89
95.49
Stainless
0.0759
0.0030
96.05
Copper
0.0860
0.0060
93.02
Copper
0.0730
0.0055
92.47
93.38
Copper
0.1123
0.0060
94.66
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 percent removal for all the cleaners were quite high, yet there was streaking and some filming left behind for every coupon. Overall, Honeywell’s Solstice PF did not perform as well as some of the others, as it left behind significantly more content than any other cleaner. There was no cleaner that was effective in cleaning without leaving a film or streaks, but of those used Vertrel Sion was the best candidate. The coupons seemed to resist streaking better if they were pulled from the solution slowly, rather than just pulling them out.
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