The supplied cleaning products was diluted with DI water to vendor recommended concentration for all purpose cleaning (3%). A second product was prepared to a 2% dilution.
Preweighed ceramic, plastic G-10 and painted steel coupons were coated with Hucker's Soil Formulation (Jif Creamy Peanut Butter 9.2%, Salted Butter 9.2%, Arrowhead Mills stone ground wheat flour 9.2%, Egg Yolk 9.2%, Evaporated milk 13.8%, Distilled water 45.8%, Printer's ink with boiled linseed oil 0.9%, Shaws saline solution 2.7%) using a handheld swab and allowed to dry for 24 hours at room temperature. The contaminated coupons were weighed again to determine the amount of soil added.
Three coupons were placed into a Gardner Straight Line Washability unit. A Kimberly-Clark Wypal reinforced paper towel was attached to the cleaning sled and soaked with 5-7 sprays of cleaning solutions. Each coupon was sprayed 7-10 times with the same cleaning solution. The cleaning unit was run for 20 cycles (~33 seconds). At the end of the cleaning, coupons were wiped once with a dry paper towel. Final weights were recorded, efficiencies were calculated and recorded.
Both products were effective at removing the Hucker’s soil from the three surfaces using manual wiping. The Product 1 resulted in the higher efficiency, removing more than 90% of the Hucker’s soil. The table lists the amount of soil added, the amount remaining after cleaning and the calculated efficiency for each coupon cleaned.
| Cleaner
|
Initial wt
|
Final wt
|
% Removed
|
| DeltaGreen - ceramic
|
|
|
|
|
|
0.6378
|
0.0166
|
97.40
|
|
|
0.5169
|
0.0161
|
96.89
|
|
|
2.9337
|
0.0023
|
99.92
|
| DeltaGreen - painted steel
|
|
|
|
|
|
0.0656
|
0.0083
|
87.35
|
|
|
0.2530
|
0.0089
|
96.48
|
|
|
0.0565
|
0.0101
|
82.12
|
| DeltaGreen - plastic
|
|
|
|
|
|
0.0648
|
0.0014
|
97.84
|
|
|
0.0362
|
0.0036
|
90.06
|
|
|
0.0312
|
-0.0001
|
100.32
|
| 3Rs - ceramic
|
|
|
|
|
|
3.9951
|
0.2482
|
93.79
|
|
|
3.1257
|
0.2251
|
92.80
|
|
|
0.6473
|
0.0025
|
99.61
|
| 3Rs - painted steel
|
|
|
|
|
|
0.0455
|
0.0102
|
77.58
|
|
|
0.0346
|
0.0087
|
74.86
|
|
|
0.0332
|
0.0034
|
89.76
|
| 3Rs - plastic
|
|
|
|
|
|
0.0374
|
0.0002
|
99.47
|
|
|
0.0670
|
0.0134
|
80.00
|
|
|
0.0746
|
0.0080
|
89.28
|