To determine the efficacy of aqueous cleaners utilizing VCN methods.
Date Run:
04/20/2023
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 Zymit 1% concentration and Micro 90 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 were 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
Zymit 1%
J1
0.3911
0.0618
84.20
81.70
73.38
0.2952
0.0712
75.88
0.2528
0.0379
85.01
J2
0.4859
0.2152
55.71
65.07
0.5946
0.1912
67.84
0.5054
0.1432
71.67
Micro 90 1%
J1
0.2474
0.0377
84.76
90.29
69.24
0.2963
0.0113
96.19
0.2866
0.0289
89.92
J2
0.4967
0.3226
35.05
48.20
0.4002
0.1925
51.90
0.5945
0.2518
57.65
Cleaner
soil
Dirty Visual
Clean Visual
AVG Clean Visual
AVG Overall
Zymit 1%
J1
5
4
4.2
4.33
5
4.5
5
4
J2
5
4
4.5
5
4.75
5
4.5
Micro 90 1%
J1
5
2.25
2.2
3.33
5
2.75
5
1.5
J2
5
4.5
4.5
5
4.5
5
4.5
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Both the Zymit 1% concentration and the Micro 90 1% concentration were only effective in removing J1 grease from stainless steel utilizing VCN methods. Neither were effective in removing J2 grease.
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