To determine the efficacy of aqueous cleaners compared to water utilizing VCN equipment.
Date Run:
04/11/2023
Experiment Procedure:
Eighteen pre weighed stainless steel coupons were used, three per soil per cleaner. Half of the coupons were soiled by swabbing the bottom third of the coupons with J1 grease, while the other half of the coupons were soiled with J2 grease. The dirty weights of all coupons were then recorded and visual rankings according to the key shown below were recorded. The coupons were then subjected to a one-minute heated cycle at 140 degrees F in the VCN using water, Alcojet 1% concentration, and LF2100 1% concentration. The coupons were then removed and left to air dry overnight. The next day the clean weights of the coupons were recorded and visual rankings weer recorded.
Visual Rankings Key
1= 100% of soil removed
2= 75% of soil removed
3= 50% of soil removed
4= 25% of soil removed
5= 0% of soil removed
Trial Results:
Cleaner
soil
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
% Overall
Water
J1
0.4213
0.0336
92.02
79.01
80.59
0.3543
0.0553
84.39
0.3507
0.1381
60.62
J2
0.7689
0.1172
84.76
82.16
1.0577
0.2377
77.53
1.0368
0.1639
84.19
Alcojet 1%
J1
0.1703
0.0001
99.94
92.33
89.58
0.7401
0.0674
90.89
0.7541
0.1045
86.14
J2
0.9003
0.1824
79.74
86.84
1.0877
0.1512
86.10
0.9777
0.0521
94.67
LF2100 1%
J1
0.4414
0.0673
84.75
74.63
82.98
0.3073
0.0926
69.87
0.3941
0.1211
69.27
J2
0.6453
0.0583
90.97
91.33
0.7435
0.0999
86.56
0.8345
0.0296
96.45
Cleaner
soil
Dirty Visual
Clean Visual
AVG Clean Visual
AVG Overall
Water
J1
5
3
3.5
3.92
5
3.5
5
4
J2
5
4
4.33
5
4.5
5
4.5
Alcojet 1%
J1
5
1
2.33
2.92
5
3
5
3
J2
5
4
3.5
5
4
5
2.5
LF2100 1%
J1
5
4
3.83
3.08
5
4
5
3.5
J2
5
2
2.33
5
2.5
5
2.5
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Water is shown to be effective in removing both J1 grease and J2 grease from stainless steel however, the data collected from the coupons cleaned with water includes an outlier. Alcojet 1% concentration is an effective cleaner in removing both soils from stainless steel. LF2100 1% is effective in removing J2 grease but not effective in removing J1grease from stainless steel.
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