Trial Purpose:
To determine the efficacy of aqueous cleaners utilizing VCN methods.
Date Run:
04/20/2023Experiment 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.
