Trial Purpose:
To compare the effectiveness of two cleaners on removing DCC 17 soil from painted VCT coupons.
Date Run:
07/03/2019Experiment Procedure:
Three pre-weighed and L value measured coupons per cleaner were contaminated with 0.5g of DCC-17 soil (33 wt.% vegetable shortening, 33 wt.% lard, 33 wt.% vegetable oil, and 1 wt.% carbon lampblack) and air dried at room temperature (68˚F) for 24 hours. Contaminated weights and L values were recorded before placing three coupons per cleaner into the Gardner Straight Line Washability (SLW) unit. A Kimberly-Clark Wypal reinforced paper towel was attached to the cleaning sled. The Wypall and each coupon were treated with two sprays, and cleaned for 20 cycles (~30 seconds of cleaning). Cleaned coupons were wiped once with a dry paper towel before final weights were taken.
Trial Results:
Better Life Floor
| Initial wt. of cont. | Final wt. of cont. | % Cont. Removed | % Average |
| 0.3124 | 0.0198 | 93.66 | 95.02 |
| 0.2867 | 0.0233 | 91.87 | |
| 0.3138 | 0.0015 | 99.52 |
| Initial L | Cont. L | Clean L | % DET | % Average |
| 94.75 | 35.40 | 79.97 | 75.10 | 77.95 |
| 95.65 | 25.78 | 80.15 | 77.82 | |
| 96.78 | 27.93 | 83.66 | 80.94 |
Method Floor
| Initial wt. of cont. | Final wt. of cont. | % Cont. Removed | % Average |
| 0.3024 | 0.0148 | 95.11 | 95.75 |
| 0.2805 | 0.0040 | 98.57 | |
| 0.3074 | 0.0198 | 93.56 |
| Initial L | Cont. L | Clean L | % DET | % Average |
| 96.46 | 23.44 | 82.77 | 81.25 | 83.96 |
| 96.79 | 19.92 | 84.22 | 83.65 | |
| 97.38 | 22.98 | 87.69 | 86.98 |
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 cleaners were considered effective at removing the DCC-17, but Method Floor had more effective stain removal.
