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Trial Number 8

Trial Purpose:

This is a final report summarizing all of TURI testing.

Date Run:

01/22/2021

Experiment Procedure:

Unheated immersion, heated immersion at 100°F, heated immersion at 120°F, and heated immersion at 120°F with agitation were all conducted throughout trial testing. The following are the ideal cleaners and their suggested method: Metalnox 6386 100% concentration unheated immersion for 15 minutes. Dimethyl Glutarate 100% concentration heated immersion with a stir bar for agitation at 120°F for 30 minutes. SC Aircraft & Metal 20% concentration heated immersion with a stir bar for agitation at 120°F for 30 minutes followed by a 30 second deionized water rinse at 120°F. All parts are dried with a heat gun.

Trial Results:

The following is a summary of all TURI testing results:

Trial 0 Unheated Immersion 15 min

Cleaner Initial wt of Cont Final wt of Cont %Cont Removed %AVG
Metalnox 6386 0.0375 0.0016 95.73 96.56%
0.039 0.0009 97.69
0.0775 0.0029 96.26
Dimethyl Glutarate 0.0432 0.0664 -53.7 15.53%
0.1002 0.0511 49
0.0854 0.0416 51.29
Smart Solve 605 0.1169 0.1168 0.09 -10.5%
0.0918 0.1088 -18.52
0.1239 0.1401 -13.08
SC Aircraft and Metal 0.1096 0.0435 60.31 68.25%
0.148 0.0338 77.16
0.1076 0.0352 67.29
SC Supersolve 0.1115 0.0502 54.98 60.96%
0.0633 0.0356 43.76
0.1382 0.0219 84.15
Crystal Simple Green 0.1266 0.0349 72.43 71.3%
0.1875 0.043 77.07
0.1475 0.0525 64.41

 Trial 1 Heated Immersion at 100°F 15 min

Cleaner Initial wt of cont Final wt of cont %Cont Removed %AVG
Dimethyl glutarate 0.0192 0.0064 66.67 68.02%
0.0438 0.0118 73.06
0.0387 0.0138 64.34
Smart Solve 605 0.025 0.0076 69.6 74.31%
0.0344 0.0086 75
0.0226 0.0049 78.32
SC Aircraft & Metal 0.0301 0.0048 84.05 79.55%
0.0272 0.0045 83.46
0.0239 0.0069 71.13
SC Supersolve 0.0692 0.0177 74.42 74.35%
0.0579 0.0202 65.11
0.1123 0.0185 83.53
Crystal Simple Green 0.0926 0.0026 97.19 82.87%
0.0731 0.0081 88.92
0.0408 0.0153 62.5

Trial 2 Heated Immersion at 120°F 15 min

Cleaner Initial wt of cont Final wt of cont %Cont Removed %AVG
Dimethyl Glutarate 0.0325 0.0064 80.31 84.51%
0.0224 0.0032 85.71
0.0168 0.0021 87.5
Smart Solve 605 0.0162 0.0007 95.68 93.98%
0.0132 0.0011 91.67
0.0166 0.0009 94.58
SC Aircraft & Metal 0.0282 0.006 78.72 71.32%
0.0224 0.0054 75.89
0.0214 0.0087 59.35
SC Supersolve 0.0473 0.0097 79.49 64.71%
0.0214 0.0104 51.4
0.0155 0.0057 63.23
Crystal Simple Green 0.0135 -0.0021 115.56 95.21%
0.0192 0.0045 76.56
0.0154 0.001 93.51

Trial 3 Unheated Immersion 30 min

Cleaner Initial wt of cont Final wt of cont %Cont Removed %AVG
Metalnox 6386 0.0273 -0.0011 104.03 104.7%
0.0211 -0.0012 105.69
0.0205 -0.0009 104.39
Dimethyl glutarate 0.0228 0.0088 61.4 57.8%
0.0199 0.0081 59.29
0.0148 0.007 52.7
Smart Solve 605 0.0165 0.0014 91.52 91.24%
0.0159 0.0001 99.37
0.0134 0.0023 82.83
SC Aircraft & Metal 0.0147 0.0075 48.98 39.31%
0.0128 0.0052 59.38
0.0094 0.0085 9.57
SC Supersolve 0.0121 0.0047 61.16 72.9%
0.0127 0.0031 75.59
0.0133 0.0024 81.95
Crystal Simple Green 0.0115 0.0088 23.48 6.8%
0.0086 0.0121 -40.7
0.0109 0.0068 37.61

Trial 4 Heated Immersion 100°F 30 min

Cleaner Initial wt of cont Final wt of cont %Cont Removed %AVG
Dimethyl glutarate 0.0314 0.0062 80.25 80.8%
0.0231 0.0051 77.92
0.0203 0.0032 84.24
SC Aircraft & Metal 0.0205 0.0048 76.58 88.43%
0.02 0.0052 74
0.0163 -0.0024 114.72
SC Supersolve 0.0153 0.008 47.71 72.59%
0.0173 0.007 59.54
0.0152 -0.0016 110.53
Crystal Simple Green 0.014 0.0072 48.57 34.91%
0.0138 0.0135 2.17
0.015 0.0069 54

Trial 5 Heated Immersion 120°F 30 min

Cleaner Initial wt of Cont Final wt of Cont %Cont Removed %AVG
Dimethyl glutarate 0.022 0.0034 84.54 86.89%
0.029 0.0033 88.62
0.024 0.003 87.5
SC Aircraft & Metal 0.0215 0.0056 73.95 84.62%
0.0184 0.0036 80.43
0.0196 0.0001 99.49
SC Supersolve 0.016 0.0068 57.5 59.36%
0.0147 0.0057 61.22
0.0028 -0.0237 946.43
Crystal Simple Green 0.0062 -0.0027 143.55 83.31%
0.0123 0.0031 74.8
0.0159 0.0013 91.82

*Bold numbers excluded from average calculations; too little soil was applied to these coupons, and do not represent cleaner performance. Soil was most likely removed quickly then the substrate was damaged due to overexposure to solvent.*

Trial 6 Heated Immersion 120°F 30 min with stir bar for agitation

Cleaners Initial wt of cont Final wt of cont %Cont Removed %AVG
Dimethyl glutarate 0.0214 -0.0004 101.87 101.27%
0.02 -0.0003 101.5
0.0224 -0.0001 100.45
SC Aircraft & Metal 0.0169 0.0005 97.04 85.02%
0.0171 0.0009 94.74
0.0177 0.0065 63.28
SC Supersolve 0.0176 0.0048 72.73 83.36%
0.0141 0.0029 79.43
0.0144 0.0003 97.92

Trial 7 Parts Testing

Cleaner Observations
Metalnox 6386 Post Clean & Dry: Appears to be effective, no oil residue visible
Smart Solve 605 May not have had enough solution for accurate testing. Post Clean: Appeared to be a residue which disappeared with drying.
Dimethyl Glutarate Post Clean & Dry: Appears to be effective, no oil residue visible
SC Aircraft & Metal During the cleaning process: oil droplets forming and falling into solution. Solution became foggy, indicating removal of soil occurring. Post Clean: Appeared to be a residue that disappeared with drying. 

*Smart Solve 605 was removed from the recommendation list due to difficulties trying to contact the vendor for several months*

Success Rating:

Final Report only.

Conclusion:

Unheated immersion for 15 minutes with Metalnox 6386 at 100% concentration, Heated Immersion at 120°F with a stir bar for agitation for 30 minutes with Dimethyl Glutarate at 100% concentration, or Heated Immersion at 120°F with a stir bar for agitation for 30 minutes with SC Aircraft & Metal at 20% concentration, followed by a 30 second deionized water rinse at 120°F, are all effective potential alternative cleaning methods.

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